Finding the right gas heater thermostat involves matching compatibility, safety features, and control type to your heating system. The table below summarizes the five selected products featured in this guide to help you compare core attributes at a glance.
| Product | Type / Use | Notable Feature |
|---|---|---|
| Rheem AP14270G Gas Control Thermostat | Water Heater Gas Control Valve | OEM factory-authorized, water temperature control |
| ProCom MN300TPA-B Ventless Infrared Space Heater | Ventless Natural Gas Space Heater | On-unit thermostat, 30,000 BTU, wall or floor mount |
| ProCom MN300TBA-B Ventless Blue Flame Heater | Ventless Natural Gas Space Heater | Blue flame output, on-unit thermostat control |
| Mr. Heater F210359 Thermostat | Replacement Thermostat For Select Heaters | Compatible with multiple Mr. Heater models, no external power |
| Rogierra 110-326 Gas Water Heater Valve | Water Heater Gas Control Valve | Built-in ECO safety cutoff, 45,000 BTU flow spec |
Content Navigation
- Rheem AP14270G Gas Control Thermostat
- ProCom MN300TPA-B Ventless Infrared Space Heater
- ProCom MN300TBA-B Ventless Blue Flame Heater
- Mr. Heater F210359 Thermostat For Heater
- Rogierra 110-326 Gas Water Heater Valve
- Reliance Water Heater Natural Gas Control Valve 100112336
- Buying Guide: How To Choose A Gas Heater Thermostat
Rheem AP14270G Gas Control Thermostat
This Rheem unit is an OEM genuine factory-authorized gas control designed primarily for water heaters. It controls the flow of gas from the main supply to the burner and provides user-accessible settings to control water temperature. The product is commonly used as a direct replacement valve where manufacturer compatibility is required.
Key considerations: Verify your water heater’s model and serial number against the Rheem compatibility list before purchasing. As an OEM control valve, installation typically involves shutting off gas supply and following manufacturer instructions or professional installation. The part’s role centers on system safety and temperature regulation rather than room-by-room thermostat programming.
ProCom MN300TPA-B Ventless Infrared Space Heater
The ProCom MN300TPA-B is a ventless natural gas infrared space heater with an integrated thermostat control offering High/Medium/Low settings. It produces up to 30,000 BTU and is rated to heat areas up to approximately 1,400 sq. ft., depending on insulation and layout.
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This unit’s thermostat is on-board, meaning temperature regulation is contained in the heater itself. Installation options include wall mounting with included hardware or floor placement on supplied base feet. Infrared output focuses on radiant heat delivery, which can feel different than convective systems and may be preferable in certain room and occupancy patterns.
When evaluating this heater, consider ventless operation requirements and local codes, as some jurisdictions limit or regulate ventless gas appliances. Also confirm fuel type (natural gas) compatibility with your supply.
ProCom MN300TBA-B Ventless Blue Flame Heater
This ProCom MN300TBA-B is the blue flame variant of the ProCom 30,000 BTU line with an integrated thermostat control. The blue flame design disperses heat through a visible flame pattern and convective heat transfer, suitable for general room heating.
Like the infrared model, it includes mounting hardware and base feet. The thermostat allows basic heat-level control (High/Medium/Low), and the unit is sized for small- to medium-area residential use. Assess your room’s ventilation, local regulations for ventless heaters, and whether blue flame or infrared output better matches your heating needs and occupant comfort patterns.
Mr. Heater F210359 Thermostat For Heater
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The Mr. Heater F210359 is a replacement thermostat designed for compatibility with several Mr. Heater models including Big Maxx and some high-intensity radiant garage heaters. It requires no external power and is a direct fit option for authorized models listed by the manufacturer.
Its core role is to replace factory thermostat components to restore temperature control and safety functions for compatible heater models. When selecting a replacement thermostat, verify your heater model numbers and confirm the thermostat’s cross-compatibility to ensure functional and safety integration.
Important safety note: Replacement of gas appliance controls should follow manufacturer instructions and local codes. If you are not experienced with gas appliance service, professional installation reduces the risk of leaks or improper operation.
Rogierra 110-326 Gas Water Heater Valve
The Rogierra 110-326 is a replacement gas water heater valve with thermostat and built-in safety features. Specifications list an inverted flare pressure regulation at 3.5″ W.C., 1/2″ inlet and outlet, a 1-3/8″ thermostat shank, and a sensing tube of about 5-1/2″. It’s rated for up to 45,000 BTU and a maximum temperature of 160°F.
Safety is emphasized with a non-recirculating energy cut-off (ECO) that shuts off gas if water temperature rises too high. The product is marketed for domestic water tanks and is not recommended for RV use. Confirm compatibility with your specific water heater model before ordering to avoid returns and ensure proper fit and function.
Reliance Water Heater Natural Gas Control Valve 100112336
The Reliance 100112336 gas control valve is designed as a replacement thermostat/control valve compatible with several branded water heaters including A.O. Smith and State. The product listing advises providing the water heater’s model and serial number to confirm compatibility prior to purchase.
As with other water heater valves, this component integrates gas flow control, temperature sensing, and safety shutoff features. Proper matching to the heater model ensures the valve seals, fittings, and sensing elements align with the original equipment specifications.
Buying Guide: How To Choose A Gas Heater Thermostat
Selecting the right gas heater thermostat or gas-control valve involves evaluating compatibility, control features, safety mechanisms, and installation considerations. The following guidance helps compare options across systems.
Identify Your System Type And Compatibility
- Water Heater Valves Vs. Space Heater Thermostats: Water heater gas control valves regulate tank temperature and combine safety controls. Space heaters with built-in thermostats regulate room temperature; replacement thermostats typically fit specific heater models.
- Model Numbers Matter: For replacement valves or thermostats, always confirm manufacturer model and serial numbers to ensure exact fit and function.
- Fuel Type: Verify natural gas vs. propane compatibility before buying.
Thermostat Control Features
- On-Unit Thermostat vs. Remote/Wall Thermostat: Some space heaters include on-board thermostats (High/Medium/Low or more granular). In-line valves control water temperature and do not provide room temperature control.
- Programmability: Decide if you need programmable schedules or simple manual thermostats. Many gas heater replacements are non-programmable and intended for direct replacement.
- Power Requirements: Replacement thermostats that require no external power simplify installation; digital thermostats may require batteries or power connections—confirm requirements.
Safety And Compliance
- Built-In Safety Cutoffs: Look for ECO or flame failure devices on water heater valves to prevent overheating and gas flow in unsafe conditions.
- Local Codes And Ventless Appliances: Ventless gas heaters may be restricted or regulated in some jurisdictions. Check local building codes and indoor air quality considerations before installation.
- Professional Installation: Gas-valve and gas appliance work often requires certified technicians. Incorrect installation risks gas leaks, carbon monoxide, or fire hazards.
Performance Considerations
- BTU Rating And Coverage: Match heater BTU output to room size and insulation. Ventless 30,000 BTU units are designed for moderate-sized spaces; actual coverage depends on heat loss and layout.
- Heat Delivery Type: Infrared vs. blue flame affects perceived warmth. Infrared delivers radiant heat to objects and occupants; blue flame provides convective warming of air.
- Temperature Range: For water heaters, confirm the maximum temperature rating and thermostat shank length for accurate sensing and control.
Installation And Maintenance
- Installation Complexity: Replacement valves and thermostats require gas shutoff and secure fittings. Consider professional service if you lack experience.
- Replacement Parts Availability: OEM-authorized parts often ensure better fit and factory support; aftermarket options may be cheaper but verify quality and safety features.
- Service Access: Choose locations that allow easy access for future maintenance, inspections, or replacement.
Comparison Perspectives
- OEM Replacement Valves (Rheem, Reliance): Best for exact-fit restoration of water heater controls and manufacturer-specified safety features.
- Integrated Thermostat Space Heaters (ProCom): Offer self-contained room heating with basic thermostat control and flexible placement options.
- Model-Specific Replacement Thermostats (Mr. Heater): Useful when repairing a compatible heater model to restore original control behavior without changing the appliance.
- Aftermarket Valve Options (Rogierra): Provide cost-effective alternatives with safety features; ensure dimensional and functional match to your tank.
Final checklist before purchasing: confirm fuel type, verify model compatibility, check local regulations for ventless appliances, evaluate required control features (programmable vs. manual), and determine whether professional installation is advised. These steps reduce installation risk and ensure the thermostat or valve performs as intended within your gas heating system.
Tips for Getting the Best HVAC Prices
- Prioritize Quality Over Cost
The most critical factor in any HVAC project is the quality of the installation. Don’t compromise on contractor expertise just to save money. - Check for Rebates
Always research current rebates and incentives — they can significantly reduce your overall cost. - Compare Multiple Quotes
Request at least three estimates before making your choice. You can click here to get three free quotes from local professionals. These quotes include available rebates and tax credits and automatically exclude unqualified contractors. - Negotiate Smartly
Once you've chosen a contractor, use the proven strategies from our guide — How Homeowners Can Negotiate with HVAC Dealers — to get the best possible final price.