The ThermoMate 113 is a propane-fired tankless water heater rated at 113,000 BTU and up to 4.4 GPM, enough to run two to three fixtures at once. It uses an oxygen-free copper heat exchanger and carries CSA certification with a long list of safety cutoffs: boil-dry, overheat, leak, anti-freeze, flame failure and high-pressure protection. It suits households of two to four people replacing a tank or adding point-of-use hot water, and it competes with other mid-output propane tankless units on flow rate and safety features rather than on smart controls or recirculation. Owners rate it highly, though a few note the output drops in cold climates and that it needs proper venting and gas supply.
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Owners rate it 4.8 out of 5 and mostly praise steady hot water and the safety features. A few mention reduced output in cold weather and the install work required.
This is a propane tankless water heater for residential use. It heats water on demand, so there is no warm-up time. It delivers up to 4.4 gallons per minute and can serve 2 to 3 fixtures at once, such as a shower, kitchen or laundry.
The heat exchanger is made of oxygen-free copper, which offers heat transfer and corrosion resistance compared to stainless steel models. A water flow sensor and a built-in chip adjust heating power 20,000 times per second to hold water temperature within ±1℉.
Safety protections include boil-dry, overheat, water leak, anti-freeze, flame failure and high water pressure protection. The unit is CSA certified for the U.S. and Canada. It is designed for indoor use and fits in small utility rooms or closets.
