HVAC
Heating and cooling that costs less to run
Heating and cooling is usually the largest single load in a house. Getting it efficient changes what solar has to cover, which is why we do both.
BBB Serving Delaware gave us its 2025 Torch Award for Ethics. See our awards and credentials
Repair and maintenance
AC and furnace repair, seasonal tune-ups, and a membership that covers scheduled maintenance so it actually happens.
Efficiency upgrades
Ductless mini-splits, high-efficiency AC and furnace replacement. Reducing consumption is often cheaper per kilowatt-hour than generating more.
How hvac work actually goes
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Diagnosis
A technician establishes what the system is actually doing, rather than what the symptom suggests.
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Root cause
Why it is doing it — which is often not the part that is making the noise.
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Options
What can be done about it, including doing less than the most expensive thing.
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Quote
What the chosen option covers and what it costs, before the work begins.
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The work
Carried out to the scope that was agreed.
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Follow-up and maintenance
What keeps it working, and how to reach us when it does not.
Comfort Membership
$15 a month, month to month. Two seasonal visits a year, 10% off service calls and add-ons, and $500 of credit toward a replacement for each active year.
Who is actually doing the work?
2009
the year SunnyMac was founded
3 offices
Marlton NJ, Bethlehem PA and Wilmington DE
4 states
New Jersey, Pennsylvania, Delaware and Maryland
4.6
out of 5 on Google, based on 669 reviews · As of October 6, 2026 · Read our Google reviews (opens in a new tab)
Our solar and roofing installation and service teams are SunnyMac employees across Delaware, Maryland, New Jersey and Pennsylvania, and our heating and cooling teams across Delaware, New Jersey and Pennsylvania — which is why one company can sequence a roof and a solar system together instead of coordinating two.