The Middletown YMCA was looking to expand their office space and purchased a historic home located near the facility. Controlled Air Inc. was challenged to find the most efficient solution to both install and run, heating and cooling for the new offices, allow for occupant comfort, while also bringing the home up-to-code. Controlled Air Inc. ran load calculations and determined that a YANMAR VRF (GHP) gas power heat pump system would be the best way to meet their needs. Controlled Air Inc. installed a Yanmar 10-ton VRF GHP, including eight .6 ton wall mounted indoor units, three 1-ton wall mounted units, one 1-ton floor standing indoor unit, one 2-ton floor standing indoor unit, thirteen wire remote controllers and an intelligent touch controller with software. The thirteen controllers allowed each room to control their own temperature, allowing for the best in user comfort. This upgrade provided the Middlesex YMCA with potential savings of over $3000 annually in energy costs.


The YANMAR Variable Refrigerant Flow (VRF) natural gas heat pump (GHP) system provides a flexible way to efficiently heat and cool many different types of buildings. By using natural gas to power a YANMAR gas engine, YANMAR’s VRF system is able to reduce electrical costs by 90% and lower average operating costs by 30% over a standard electric system. By using world class Yanmar gas-engines to drive the system, these reversible air-source heat pumps can give low running costs, reduce CO2 emissions and use very little electricity. GHP is a well-established technology and Yanmar has been one of the leaders in this field for the last 30 years. By offering Air-to-air (VRF) and Air-to-water GHP systems, Yanmar can provide efficient and cost effective solutions for a wide range of cooling and heating applications.

These systems are ideal in many applications where cooling and heating might be necessary at the same time in different areas of a building such as offices, schools, hospitals, labs and mixed use facilities.

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