Tankless Water Heaters

HVAC Store provides a selection of premium tankless water heaters engineered for high-demand residential and light-commercial applications. These systems are selected for their technical reliability, precise BTU/GPM ratings, and versatile venting configurations that meet modern building codes. By focusing on gas-fired technology from established manufacturers, we ensure that contractors and homeowners can match a specific model to a building's peak hot water load with technical precision.

Continuous Hot Water with Compact, High‑Efficiency Design

Tankless technology utilizes high-output burners and high-performance heat exchangers to heat water instantly as it flows through the unit. This demand-based heating eliminates the standby energy losses associated with traditional storage tanks, contributing to a more sustainable and energy-efficient mechanical system. Our collection features multiple input capacities, including 140,000, 160,000, 180,000, and 199,000 BTU models, which provide specific Gallons Per Minute (GPM) outputs tailored to multiple simultaneous fixtures.

We offer both natural gas and propane configurations in non-condensing and high-efficiency condensing designs. Condensing models utilize a secondary heat exchanger to capture latent heat from combustion gases, achieving superior thermal efficiency. With both indoor and outdoor-mounted options available, these units offer flexibility for various gas piping and electrical layouts. When sized to the local groundwater temperature and required temperature rise, these systems provide a continuous hot water supply while reducing long-term utility overhead.

Choosing the Right Tankless Water Heaters for Your Home or Business

• Determine Fuel Source and Location: Select between natural gas and propane models, then identify the optimal installation site—indoor or outdoor—based on venting paths and combustion air requirements.

• Match BTU Input to GPM Demand: Use the BTU rating to determine the maximum GPM flow; higher BTU units are the leading choice for homes with multiple showers or high-capacity appliances running simultaneously.

• Evaluate Condensing Technology: Choose condensing gas models for projects requiring the highest energy efficiency and lower vent temperatures or non-condensing models for simpler retrofit applications.

• Verify Installation Infrastructure: Coordinate with a licensed professional to ensure gas line sizing, flue materials, and electrical connections meet the manufacturer's specific requirements and local codes.

• Plan for Maintenance and Warranty: To maintain comprehensive warranty coverage, factor in periodic descaling and filter maintenance to protect the heat exchanger from mineral build-up.

Related Collections for Complete Hot Water and Heating Solutions

• Furnaces

• Heat Pumps

• Installation Kits

• Thermostats