![heating - How can I retrofit this existing wall-heater with an external thermostat? - Home Improvement Stack Exchange heating - How can I retrofit this existing wall-heater with an external thermostat? - Home Improvement Stack Exchange](https://i.stack.imgur.com/BNVaR.jpg)
heating - How can I retrofit this existing wall-heater with an external thermostat? - Home Improvement Stack Exchange
![Williams 35,000 BTU/Hour Forsaire Counterflow Top-Vent Wall Furnace Natural Gas Heater 3508632 - The Home Depot Williams 35,000 BTU/Hour Forsaire Counterflow Top-Vent Wall Furnace Natural Gas Heater 3508632 - The Home Depot](https://images.thdstatic.com/productImages/d4f40d7d-ad6f-4f5e-af96-ce44912a4977/svn/whites-williams-gas-wall-heaters-3508632-64_600.jpg)
Williams 35,000 BTU/Hour Forsaire Counterflow Top-Vent Wall Furnace Natural Gas Heater 3508632 - The Home Depot
![Williams Direct-Vent Gravity Wall Heater 30,000 BTUH, 66% AFUE, Natural Gas 3003822 - The Home Depot Williams Direct-Vent Gravity Wall Heater 30,000 BTUH, 66% AFUE, Natural Gas 3003822 - The Home Depot](https://images.thdstatic.com/productImages/8b73a409-3bf0-47c2-a5f2-2f3515b5c805/svn/whites-williams-gas-wall-heaters-3003822-64_600.jpg)
Williams Direct-Vent Gravity Wall Heater 30,000 BTUH, 66% AFUE, Natural Gas 3003822 - The Home Depot
EMPIRE, 50,000 BtuH Heating Capacity Input, Standing Pilot, Match Lit, Recessed-Mount Gas Wall Heater - 48XH59|GWT50WNAT - Grainger
![Rinnai EX17DTP Direct Vent Wall Furnace, Indoor Propane Heater, Energy Efficient Space Heater, 16,700 BTU, Beige - Amazon.com Rinnai EX17DTP Direct Vent Wall Furnace, Indoor Propane Heater, Energy Efficient Space Heater, 16,700 BTU, Beige - Amazon.com](https://m.media-amazon.com/images/I/61UHEjSBpzL.jpg)
Rinnai EX17DTP Direct Vent Wall Furnace, Indoor Propane Heater, Energy Efficient Space Heater, 16,700 BTU, Beige - Amazon.com
![Amazon.com: Empire Comfort Systems Direct-Vent Wall Furnace Size: 35,000 Btu, Fuel: Liquid Propane : Tools & Home Improvement Amazon.com: Empire Comfort Systems Direct-Vent Wall Furnace Size: 35,000 Btu, Fuel: Liquid Propane : Tools & Home Improvement](https://m.media-amazon.com/images/I/3100OwDixJL._AC_UF894,1000_QL80_.jpg)
Amazon.com: Empire Comfort Systems Direct-Vent Wall Furnace Size: 35,000 Btu, Fuel: Liquid Propane : Tools & Home Improvement
![Williams 25,000 BTU/hr. Monterey Top-Vent Wall Furnace Natural Gas Natural Gas 2509622A - The Home Depot Williams 25,000 BTU/hr. Monterey Top-Vent Wall Furnace Natural Gas Natural Gas 2509622A - The Home Depot](https://images.thdstatic.com/productImages/2d98ce5f-bf72-47e9-acd3-d822b618c033/svn/whites-williams-gas-wall-heaters-2509622a-64_1000.jpg)