Heat pumps - Articles - Page 3 | Plumbing & Mechanical

Aermec North America's new WWMG heat pump.

Aermec North America WWMG heat pump

The company has released a successor to their previous WWM model.

November 6, 2025

The WWMG heat pump allows for more heating and cooling per square foot, and its compact design make it an option for retrofitting.

Hybrid hydronic heat and domestic hot water for smarter residential: installing the Weil-McLain ECO Hybrid System

A dual-fuel hydronic installation near Lake Michigan demonstrates how hybrid heating systems can improve comfort and efficiency in cold climates.

October 8, 2025

By pairing an air-to-water heat pump with a high-efficiency propane boiler, contractor James Downs helped a Chicagoland homeowner cut fuel costs and reduce environmental impact — without sacrificing performance.

Graham McCracken, the new managing director for Freedom Heat Pumps.

Freedom Heat Pumps appoints new managing director

The UK-based company has appointed Graham McCracken to the role.

October 3, 2025

McCracken brings over two decades of experience in the industry to this position.

Lochinvar 208V Veritus Air Source heat pump water heater

Lochinvar expands its Veritus heat pump water heater line with a new 208V model designed to meet the needs of diverse commercial applications.

September 23, 2025

The 208V model is designed for multifamily buildings, retrofits and other commercial projects.

The Nuos Side-Connect 80 gallon water heater.

Ariston Nuos Side-Connect and Multi-Fit Hybrid Heat Pump water heaters

New products aim to improve efficiency in a range of usage patterns,

September 8, 2025

Ariston USA has expanded their Nuos range with two new water heaters.

Fujitsu AIRSTAGE J-7S VRF heat pump

Fujitsu introduced a new line of VRF heat pumps.

June 27, 2025

These models offer greater flexibility, efficiency and more compact design.

Daikin OTERRA single-zone heat pumps

Daikin OTERRA 115V single-zone systems are designed for ease of both installation and maintenance.

June 10, 2025

The heat pumps are optimized for quick, easy instillation.

The Centrus the Centrus air-to-water hydronic heat pump.

Lochinvar Centrus air to water hydronic heat pump

Lochinvar debuts air-to-water heat pump designed for year-round residential and light commercial use.

May 5, 2025

The new Centrus unit provides heating, cooling, and hot water from a compact system engineered for cold-weather performance and compatibility with standard North American components.

ASHRAE announces dynamic technical program for 2025 Annual Conference in Phoenix

Over 80 sessions and 10 ALI courses planned – early bird registration open through April 28.

April 26, 2025

The conference will feature panels, courses and technical sessions on a variety of topics.

Powerful heat pump for heating and air conditioning of a modern private house installed outside on the side of the house.

Renewable Heating Design | John Siegenthaler

Versatility in direct-to-load systems, part two

Going direct.

John Siegenthaler, P.E.

April 8, 2025

Last month, we discussed direct-to-load hydronic heat pump systems. These systems use a variable-speed compressor and circulator to adjust heat output and flow, eliminating the need for a buffer tank or hydraulic separator.