The 10 Best Heater Conversion Kits of 2026

This Rinnai recirculation pump kit transforms compatible tankless gas water heaters into instant hot water systems with an internal pump and thermal bypass valve. It's perfect for homeowners with garden potting stations or outdoor faucets who hate running cold water while waiting to wash tools, gloves, or fresh veggies.

Key features shine in real gardening scenarios: the 4-speed DC pump runs quietly for on-demand hot water during muddy spring cleanups or fall harvests. Users love skipping the wait, making daily tasks faster and more efficient without wasting resources.

Build quality features reliable plastic parts and all necessary hardware for a clean retrofit. It's mounted internally for a tidy setup, holding up well in home systems supporting garden use, though not exposed to direct outdoor elements.

Limitations include model-specific fit and potential need for plumbing skills. Still, for Rinnai owners seeking hot water convenience, this kit delivers practical value.

Our verdict: Highly recommend for gardeners upgrading their backyard water setup. It solves the hot water delay problem, enhancing outdoor living efficiency.

Follow these steps for a smooth retrofit on your compatible Rinnai tankless heater:

• Shut off gas and water supply, then drain the system.
• Access the internal compartment per your model's manual.
• Install the pump and thermal bypass valve using included hardware.
• Wire the 4-speed pump and test for quiet operation.
• Prime the system and check for leaks before full use.

Consult a plumber if unsure, especially for gas connections, to ensure safe garden-ready performance.

Instant hot water revolutionizes backyard tasks:

• Rinse muddy tools and pots without cold shock or waste.
• Wash harvested veggies safely before indoor prep.
• Clean outdoor furniture or patio surfaces efficiently.
• Support greenhouse or shed hygiene year-round.

Reduces overall water use, aligning with sustainable gardening practices for thriving lawns and beds.

Keep your kit performing optimally:

• Flush the recirculation loop annually to prevent buildup from garden sediments.
• Adjust pump speed for seasonal needs, lower in winter.
• Inspect valves and connections before heavy spring use.
• Store system properly during off-seasons to protect plastic parts.

Quiet pump requires minimal upkeep, ensuring long-term reliability for your outdoor water needs.

As a fellow RV gardener who's spent weekends tending plots far from home, I know the frustration of a failed water heater element mid-trip. The Valterra HR6P2 is the genuine replacement probe for the Hott Rod 6-gallon conversion kit in Suburban water heaters. It suits RV owners, campers, and outdoor enthusiasts who rely on hot water for practical tasks like cleaning muddy tools or rinsing fresh produce after foraging or gardening.

Key to its performance is the electric stainless steel probe that slips right into the Hott Rod system, delivering steady heat without the fuss of gas. In real-world use, it provides reliable hot water for quick showers after a day digging in the dirt or washing gear, keeping your camping routine smooth even off-grid.

Build quality shines with tough stainless steel that withstands the rigors of travel and hard water, while its featherlight 0.01-ounce weight makes it a breeze to pack. It holds up well in RV conditions, ensuring your setup stays functional season after season.

Limitations include strict compatibility with the official Hott Rod kit and indoor installation style, so it's not for makeshift outdoor rigs. Always verify your Suburban model first.

Overall, this is a smart, no-nonsense replacement that keeps hot water flowing for your gardening escapes. Grab it if your Hott Rod needs a refresh to maintain that comfortable outdoor lifestyle.

Replacing the HR6P2 is straightforward for handy gardeners. Always power off and depressurize the water heater first for safety.

• Remove the old element by unscrewing it from the Hott Rod kit access panel.
• Insert the new stainless steel probe, ensuring a snug fit without overtightening.
• Reconnect wiring securely, following the Hott Rod manual diagrams.
• Refill the system, check for leaks, and test heat output with water flow.
• Takes under 30 minutes with basic tools like pliers and a screwdriver.

Confirm this fits your setup to avoid issues during your next garden getaway.

• Designed exclusively for Valterra Hott Rod 6-gallon conversion kits.
• Works with Suburban water heaters in RVs.
• Electric, indoor style; not for direct propane or outdoor-only units.
• Model HR6P2; check your kit's markings before purchase.

If unsure, consult your RV manual or Suburban specs for peace of mind.

Extend the life of your heating element for reliable camping hot water.

• Flush the tank annually to remove sediment buildup from well water.
• Inspect wiring monthly for wear from road vibrations.
• Avoid running dry; always keep water levels full.
• Store RV with element protected in winter to prevent freezing damage.

Simple habits like these keep it performing like new for years of garden adventures.

This Mr. Heater Big Maxx fuel conversion kit lets you adapt your 50,000 or 80,000 BTU unit heater from natural gas to liquid propane, perfect for gardeners in areas without gas lines like rural backyards or urban garages. It's ideal for homeowners extending their growing season by heating greenhouses, sheds, or workshops where you store tools and start seeds.

Key features include easy-to-replace components that maintain full heat output and efficiency. In real-world use, it delivers reliable warmth for protecting tender plants or comfortable winter potting, with users praising the complete kit that includes everything needed. The multicolor label ensures you never forget the fuel type during busy gardening tasks.

Build quality feels solid for outdoor exposure, though it's not electric and relies on gas connections. Durability holds up well for seasonal swaps, backed by a one-year warranty. Limitations include potentially fuzzy instructions that might challenge beginners, and some report fit issues on non-standard heaters.

Overall, it's a practical choice for experienced gardeners needing flexible heating solutions. If your setup matches MHU50 or MHU80 models, this kit gets your space toasty without hassle, helping you garden year-round.

Follow these steps for a smooth NG to LP conversion on your Mr. Heater unit:

• Turn off gas supply and let the heater cool completely.
• Remove existing natural gas components using basic tools.
• Install the provided valve, spring, and fittings per the kit diagram.
• Apply the included label to indicate propane use.
• Test for leaks with soapy water before firing up.

Users note diagrams could be clearer, so reference online videos if needed. Always prioritize safety in garden spaces.

Maximize this kit in these gardening scenarios:

• Greenhouses: Convert for propane to heat seedlings through frost.
• Garage Workshops: Warm up for year-round tool repairs and potting.
• Sheds & Patios: Reliable backup heat for extended outdoor living.
• Off-Grid Yards: Switch when natural gas isn't available.

Delivers up to 80,000 BTUs to cover medium spaces effectively.

Keep your converted heater running strong:

• Inspect connections annually before winter use.
• Clean orifices to prevent propane buildup issues.
• Store kit parts dry when not in use.
• Monitor for unusual odors and shut off immediately if detected.

Regular checks ensure safe, efficient heat for your garden projects.

This Fistihon kit transforms your RV's LP gas water heater into a 120V electric powerhouse, perfect for gardeners who camp or use RVs for hauling plants and tools. It suits beginner to experienced outdoor enthusiasts wanting propane-free hot water during backyard projects or road trips to garden shows.

Key features shine in real-world use: the adjustable thermostat maintains ideal temps for post-gardening showers, while color-coded cords enable plug-and-play setup in under an hour. On a full 6-gallon tank, expect hot water for a satisfying rinse after muddy work, conserving propane for longer adventures.

Build quality impresses with rugged 304 stainless steel heating rod and protective covers, resisting corrosion from outdoor exposure. It's lead-free for safe family use, though always verify tank levels to prevent dry-heating issues.

Limitations include slower performance on bigger tanks and reliance on electric hookup, but for standard RV setups, it's a game-changer. We recommend it for practical gardeners prioritizing efficiency and ease in their outdoor living routine.

Setting up the Fistihon conversion kit is simple for any gardener tackling DIY projects. Follow these steps for quick results:

• Turn off LP gas and drain the water tank completely.
• Remove the old gas burner and insert the stainless steel heating rod using included brass bushings.
• Connect color-coded cords to the thermostat, switch, and power source.
• Mount the independent switch and bracket securely.
• Refill tank, plug into 120V, and test with adjustable thermostat.

No special tools needed; complete in 30-60 minutes at your campsite or driveway.

Compatible with most Suburban and Atwood 6-gallon RV water tanks. Check your model for exact fit; includes bushings for standard ports.

• Power: 450W corded electric; use shore power or generator.
• Safety tip: Always heat with full tank to avoid rod damage.
• Gardener's use: Ideal for rinsing dirty tools or quick showers after planting sessions.
• For larger tanks, allow extra time or consider dual setups.

Maximize your setup for outdoor gardening:

• Use hot water to clean pots and tools on-site, saving space in your RV.
• Pair with solar generators for off-grid nursery visits.
• Switch to electric mode at powered campsites to stretch propane for cooking garden-fresh meals.
• Store kit components dry to maintain performance through seasons.

This Vitpurth conversion kit transforms propane appliances into natural gas powerhouses, ideal for U.S. homeowners with existing gas lines who love hosting backyard cookouts or warming up patio spaces. It's a game-changer for gardeners expanding their outdoor living areas with reliable grills, fire pits, and heaters.

Key features shine in real-world use: the 12FT hose with quick connect offers ample reach for your grill station or fire table, while multiple adapters and orifices ensure compatibility with Blackstone griddles, Weber grills, and more. Gardeners report straightforward setups leading to consistent flames for searing steaks or toasting marshmallows during family gatherings.

Build quality stands out with 100% solid copper fittings, high-grade rubber hose, and spiral stainless steel reinforcement, built to handle moisture, temperature swings, and frequent outdoor exposure. Tools like the orifice wrench and thread gauge make the process user-friendly.

Limitations include potential need for custom tweaks on niche appliances and no included regulator, so check your setup first. Overall, it's a smart, durable choice for permanent backyard upgrades, highly recommended for practical outdoor enthusiasts.

Start by turning off gas supplies and disconnecting propane tanks for safety. Use the included thread gauge to select the right orifice size, drill if needed for optimal flow, and apply sealing tape to all connections.

• Match adapters to your appliance's fittings, common for Blackstone 28" and 36" models.
• Secure the hose with nylon buckles to avoid kinks during use.
• Test for leaks with soapy water before lighting up.

Most users complete the job in under an hour, perfect for weekend garden maintenance.

Works great with Blackstone griddles, Weber natural grills, Char-Broil, pizza ovens, patio heaters, fire pits, and generators. Includes five coupling adapters for versatility.

• Best for 28" and 36" Blackstone models and similar sizes.
• Check burner ports; may not fit smaller Nexgrill side burners without extras.
• Suitable for indoor/outdoor use like RVs, camping stoves, and winter heating.

Review your appliance manual to confirm orifice and thread sizes match the kit's offerings.

Pair this kit with your grill for a dedicated natural gas zone near raised garden beds or lawn areas, freeing up space from propane tanks. Extend to fire pits for ambient lighting during evening weeding sessions.

• Position heaters strategically around patios for year-round comfort.
• Integrate with pizza ovens for fresh garden harvest pizzas.
• Use for tailgater stoves during outdoor parties.

Creates a seamless, low-maintenance hub for better backyard living.

The Briidea RV Electric Water Hybrid Heater Kit transforms your RV's 6-gallon LP gas water heater into a hybrid electric system using 120V power, compatible with Suburban and Atwood models. It's a practical choice for gardeners who use RVs for hauling plants, camping in backyard setups, or maintaining outdoor workshops needing hot water for cleaning tools and rinsing soil-covered produce.

Standout features like the 425W 304 stainless steel heating rod, adjustable thermostat, and independent switch deliver consistent performance. In real-world use, it excels at providing hot water for everyday tasks such as washing hands after planting or soaking tools, with users noting reliable heat without propane costs. The low wattage prevents circuit overloads, making it suitable for shore power or generator setups during garden trips.

Build quality shines with corrosion-resistant materials that stay lead-free for safe water, and included accessories like nylon bellows and tape simplify setup. While effective for small-volume needs, it requires proper sealing to avoid drips and enough water before starting to prevent damage.

Limitations include longer heat-up times for bigger demands, but for targeted garden maintenance, it's efficient. Overall, this kit earns high marks as a cost-effective upgrade for RV gardeners seeking convenient hot water on the go.

Installation is DIY-friendly with 6.6 ft color-coded wires and brass bushings in 1/2-inch and 3/4-inch sizes. Remove the anode rod or drain plug, insert the heating rod, connect wires matching colors, mount the switch and thermostat on a flat surface, and plug into a 120V outlet.

• Tape carefully around the sensor hole without blocking it for accurate temperature reading.
• Ensure the tank is full before powering on to avoid damage.
• Watch YouTube tutorials for Suburban or Atwood specifics.
• Tighten the rod firmly but check for leaks periodically.

Most users complete it in under an hour, no electrician needed.

Keep your kit running smoothly by checking connections monthly and ensuring no tape blocks the thermostat sensor. Use only with sufficient water to prevent dry heating.

• Winter tip: Set thermostat to avoid freezing during cold garden storage.
• Clean the rod annually for optimal efficiency.
• Avoid GFCI issues by verifying wiring; ground properly.
• Store accessories in your RV or shed for quick emergency access.

Safer than propane for backyard use, with independent switch for control.

Perfect for outdoor enthusiasts combining gardening with RV life: warm water for tool sterilization, vegetable washing post-harvest, or quick cleanups after mulching.

• Backyard RV parked for weekend projects.
• Camping trips hauling plants or supplies.
• Shed or greenhouse water tank upgrades.
• Low-power option when running lights or fans.

Not suited for heavy showers, but shines for practical garden support.

This Camco Hot Water Hybrid Heat Kit transforms standard 6-gallon RV LP gas water heaters into efficient electric hybrids, ideal for gardeners and outdoor lovers who camp or host backyard adventures. It suits homeowners tired of propane costs during long weekends tending remote garden plots or relaxing in the yard.

Key features include a 425W stainless steel heating cartridge, adjustable thermostat preset to 120°F, and an on/off switch with bracket. In real-world use, it delivers steady hot water for showers and chores after a day digging in the dirt, with many users noting it maintains temperature without propane intervention. Pair it with shore power at campsites for hassle-free operation.

Build quality shines with durable materials and color-coded wiring that withstands outdoor rigors. The kit preserves your gas burner for hybrid flexibility, boosting reliability on unpredictable trips.

Limitations include longer initial heat-up times and the need for 120V access, plus minor wiring tweaks for tight spaces. Still, it's a smart upgrade for practical outdoor living.

Overall, if you value propane savings and convenience for camping or glamping amid your garden pursuits, this kit earns strong recommendation for its proven performance.

Installing the Camco Hybrid Heat Kit is DIY-friendly for gardeners comfortable with basic wiring. Follow these steps for smooth setup in your RV or outdoor setup.

• Turn off propane and drain the water heater completely.
• Remove the drain plug and anode rod, then insert the 6.25-inch heating element through the opening.
• Mount the thermostat on the tank with provided tape, ensuring good contact.
• Connect color-coded wires to the element, switch, and thermostat per the illustrated diagram.
• Secure the on/off switch nearby with the bracket, plug into 120V outlet, and test.

Expect 45-90 minutes total. Users praise the clear instructions; watch for tight spaces around the tank.

Maximize propane savings with this hybrid kit by using electric mode at powered sites. Set the thermostat a few degrees above your gas setting to minimize propane kicks in.

• Pre-fill the tank before powering on to cut heat-up time.
• Run continuously on shore power for steady hot water without waste.
• Use propane only for high-demand recovery, like back-to-back showers.
• Insulate lines in cooler weather to retain heat longer.

Gardeners report paying for itself quickly through fuel savings on camping trips, with water staying hot for tool rinses and relaxation.

Campers and outdoor fans rave about endless hot water without propane drain. One user enjoyed weeks of continuous use, another noted hotter water than gas alone.

• Easy access switch prevents forgetting to turn off.
• Works well for families with staggered showers.
• Fits most 6-gallon Suburban and Atwood models perfectly.

Common tip: Leave extra wire for draining ease. Reliable for full-time or weekend yard escapes.

This GEAIN RV water heater door conversion kit is a straightforward replacement for worn-out access doors on Dometic and Atwood 6-9 gallon RV water heaters. It's perfect for RV owners who love hitting the road for garden shows, camping retreats, or backyard tailgates, ensuring reliable access to your water heating system without fuss.

Key features shine in real-world outdoor use: the kit fits the original mounting spots precisely, installs in minutes with no extra tools needed, and offers strong sealing to shield against rain and dirt from garden trips. The classic black finish coordinates with your RV's trim, maintaining that polished look whether parked in your driveway or at a remote campsite.

Build quality is solid for everyday RV demands, with durable plastic that holds up to weather swings, though it's not as rugged as metal alternatives. At just 1.6 ounces, it's easy to handle during installs.

Limitations include model-specific fit, so verify your heater matches before buying, and the lightweight plastic may show wear faster under extreme abuse.

Overall, this is a smart, practical upgrade for keeping your RV's water heater accessible and protected, letting you focus on outdoor living and gardening adventures. Highly recommend for beginner RV gardeners maintaining their setups.

Installing the GEAIN 94951 kit is simple and tool-free for most users. Follow these steps for quick setup before your next garden outing:

• Remove the old door by unscrewing the mounting hardware.
• Align the new door in the original position; it snaps into place without modifications.
• Secure with provided screws and test the seal by gently pressing around the edges.
• Check for smooth operation and weather-tight fit.

Included instructions make it foolproof, typically taking under 15 minutes.

Ensure this kit fits your RV water heater with these details:

• Compatible models: Dometic RV water heaters, Atwood GCH6A-10E (6-gallon), WH-6GA, WH-6GEA, WH-9GEA.
• Designed for 6/9-gallon sizes with standard openings.
• Surface mount style; gas-powered, non-electric.

Measures 2 inches wide by 1 inch high for precise compartment fit. Not universal, so match your specs for best results in outdoor RV use.

Keep your RV water heater door performing like new:

• Inspect seals seasonally for cracks, especially after garden camping in wet weather.
• Clean with mild soap and water; avoid harsh chemicals on the plastic.
• Store RV under cover when possible to extend door life.
• Pair with regular heater flushes for optimal hot water during outdoor adventures.

These habits prevent common issues like poor sealing or damage from elements.

This fuel conversion kit from Mr. Heater is designed to change MH25 garage heaters from natural gas to liquid propane, making it a practical choice for gardeners in colder climates who use garages or workshops for storing tools, pots, and seedlings over winter. It's ideal for homeowners without natural gas lines but with propane tanks available, ensuring your space stays warm for off-season projects.

Key features include all components needed for the switch, clear instructions, and labels to indicate the new fuel type. In real-world use, it delivers reliable performance up to 25,000 BTU, keeping garages toasty for tasks like sharpening tools or starting seeds indoors. Users confirm it seals well and runs smoothly after install.

Build quality is solid with durable parts suited for wall-mounted indoor heaters, holding up in dusty workshop environments. However, it's not for beginners; professional installation is required for safety and warranty compliance.

Limitations include model-specific fit and potential minor tweaks like orifice adjustments. Overall, it's a smart upgrade for gardeners wanting efficient propane heating. We recommend it for anyone converting heaters to extend their outdoor living season into winter.

Always hire a licensed professional for the conversion to ensure gas lines are secure and pressure ratings (up to 150 PSI) are met.

• Shut off all power and fuel before starting.
• Verify compatibility with your 25,000 BTU MH25 heater.
• Apply all included labels post-conversion for quick identification.
• Test for leaks using soapy water after install.

Follow local codes to keep your gardening workspace safe and warm.

Use your converted propane heater to create a functional winter hub for seed starting, tool maintenance, and potting.

• Pair with insulated garage doors to maximize heat retention.
• Set up workbenches near the heater for efficient spring prep.
• Store sensitive plants like tropicals in the warmed area to overwinter.
• Combine with grow lights for an indoor greenhouse extension.

This setup turns cold garages into productive garden centers year-round.

Natural Gas (NG): Cleaner burn but requires piped lines, less flexible for remote garages.

Liquid Propane (LP): Portable tanks, higher energy density for consistent heat in off-grid spots.

• LP kits like this enable easy switches where NG isn't feasible.
• Both deliver similar BTU output with proper conversion.
• LP often costs less to install for standalone use.

Choose LP conversion for gardening sheds without utility hookups.

This NA to LP conversion kit from Hayward is designed for Universal H-Series Low NOx pool heaters, allowing a straightforward switch from natural gas to liquid propane. It suits backyard pool owners who want reliable heating without natural gas access, perfect for enhancing outdoor living alongside your garden spaces.

In real-world backyard use, the kit delivers components that integrate seamlessly with models like H150FDN to H400FDN, keeping your pool warm efficiently for longer evenings under the stars. It upholds the heater's Low NOx standards, supporting cleaner operation during family swims or garden parties.

Hayward's build quality shines through in the durable, lightweight 4-ounce kit that handles outdoor conditions well. While user-friendly for handy gardeners, gas work demands care, so consider a pro for safety.

One limitation is its model-specific design, so double-check compatibility. Verdict: a practical upgrade for maintaining cozy backyard pools that tie into your thriving lawn and garden oasis.

Confirm your Hayward Universal H-Series Low NOx pool heater matches these models before converting:

• H150FDN, H150FDP
• H200FDN, H200FDP
• H250FDN, H250FDP
• H300FDN, H300FDP
• H350FDN, H350FDP
• H400FDN, H400FDP

Exact fit ensures smooth performance in your backyard setup.

Switching to LP offers key advantages for backyard pool heating:

• Propane availability in rural or gas-limited areas
• Potentially lower fuel costs depending on local rates
• Portable tanks for flexible outdoor installations
• Reliable heating to extend your garden pool season

Keeps your space warm and inviting without infrastructure hassles.

For safe NA to LP conversion on your H-Series heater:

1. Shut off gas supply and disconnect power
2. Remove existing natural gas orifices
3. Install LP-specific components from the kit
4. Test for leaks and relight pilot

Strongly recommend professional installation to avoid risks in your backyard environment. Always follow Hayward manuals.