Sun Engineering, Inc. / HVAC Design & Consulting  High Efficiency Gas / Oil Heating Systems, Geothermal Cooling Systems, Indoor Pool Heating and Dehumidifying Systems, Kitchen Ventilation Systems, Clean Steam Humidifiers, Air-to-air Heat Exchangers, Wine Cellar Systems  

Complicated Systems Made Simple, Since 1995
About Us

Sun Engineering specializes in designing heating, ventilating and cooling systems for clients with challenging architectural designs.

Why hire Sun Engineering?

Because we are experienced in all Hvac systems design, not just geothermal, solar, hot water radiant floors, state of the art gas or oil systems or radiant heating and cooling systems.

We offer an UNBIASED assessment and operating cost comparison of the many Hvac systems available based on the latest energy cost for each fuel.

We do not try to "sell" you on a system using biased operating cost numbers.

The owner of Sun Engineering is Sean Fennessy who is celebrating over 20 years serving exacting clients who place comfort, quality, sustainability and efficiency above all else.

We design and integrate geothermal systems, solar PV and solar thermal systems as well as high efficiency gas and oil to all work together.

If you have a challenging project and need a creative team with the experience to design your HVAC systems - contact us!


Registers, Grilles and Diffusers
These are the “grilles” on your floor, walls and ceilings that bring warm or cool air into each room.


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