Description
Enjoy continuous, on-demand hot water with the ThermoMate CZ750NG Natural Gas Tankless Water Heater. Designed for indoor whole-house applications, this powerful 199,000 BTU gas water heater delivers up to 8 GPM, providing reliable hot water for multiple bathrooms, kitchens, and laundry areas. Featuring precise temperature control, an efficient copper heat exchanger, and a compact wall-mounted design, the CZ750NG offers a convenient hot water solution for modern homes.
Powerful 199,000 BTU Heating for Whole House Use
With a maximum heating capacity of 199,000 BTU and a hot water flow rate of up to 8 GPM at a 33°F temperature rise, this natural gas tankless water heater can support 3–5 fixtures simultaneously under suitable operating conditions. Whether you're taking a shower, washing dishes, or doing laundry, enjoy a continuous supply of hot water without the limitations of a traditional storage tank.
Energy-Efficient On-Demand Water Heating
Built with a high-quality oxygen-free copper heat exchanger, the CZ750NG provides efficient heat transfer and reliable long-term performance. With a thermal efficiency rating of up to 98% and a Uniform Energy Factor (UEF) of 0.81, its on-demand heating system heats water only when needed, helping reduce standby energy waste compared with conventional tank-style water heaters.
Precise Temperature Control Within ±1°F
Advanced water flow and temperature sensors continuously monitor operating conditions and automatically adjust gas input and heating output. The intelligent multi-stage combustion system helps maintain water temperature stability within ±1°F, providing consistent comfort even when water demand or incoming water temperatures fluctuate.
Advanced Safety Features & Freeze Protection
Designed for safe and dependable indoor operation, this gas tankless water heater incorporates eight safety protections, including flame failure, overheating, over-temperature, freeze, dry-burn, blockage, high-temperature lockout, and excessive air pressure protection. The built-in freeze protection system activates at approximately 41°F (5°C) to help protect internal components during cold weather when operating conditions allow.
Compact Wall-Mounted Design for Easy Installation
Measuring just 21"H × 13"W × 7"D, the CZ750NG saves valuable floor space and fits conveniently in utility rooms and other suitable indoor installation locations. Standard 3/4" NPT hot and cold water connections, a 3/4" NPT natural gas inlet, a 3" OD vent connection, and a 120V power plug provide practical installation compatibility. Professional installation according to local codes and the product manual is required.
FREE Shipping to U.S. Mainland addresses only. Unfortunately for us, we do not offer free shipping to Alaska, Hawaii, Virgin Islands, Puerto Rico, Guam or Canada, however if you do need to ship to these places, please kindly call us and the freight will be paid by you based on the specific address you can provide for us.
When you place an order, we will estimate shipping and delivery dates for you based on the availability of your items and the shipping options you choose. Depending on the shipping provider you choose, shipping date estimates may appear on the shipping quotes page.
Please also note that the shipping rates for many items we sell are weight-based. The weight of any such item can be found on its detail page. To reflect the policies of the shipping companies we use, all weights will be rounded up to the next full pound.
For returns due to buyer's remorse (ie: Order by mistake, Does not fit, Change my mind, No longer needed, etc) we will deduct 20% of your total refund amount for the reason of the loss caused to us as a vendor, which means only 80% of your total refund will be sent back to your account. For a defective return, a full refund will be sent back to your account.
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