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Want the best in HVAC for Delaware and Maryland? Just give one of our many locations a call and we will be sure to inform you with all the great services we provide to all our customers/clients! First Class HVAC offers the best services for Air Conditioning, Heating, Plumbing and Electrical in Delaware and Maryland!


Sussex:  (302) 934-8900
Kent: (302) 697-4200
New Castle: (302) 834-5100
(410) 742-2121
Bethany / Fenwick:
(302) 539-0600
Lewes / Rehoboth: (302) 539-0600
Seaford / Bridgeville: (302) 337-8959
Dover /Milford / Milton: (302) 697-4200
Salisbury / Ocean City: (410) 742-2121
Middletown: (302) 834-5100
FAX: (302) 933-0334
ADDRESS: 28418 Dupont Blvd Millsboro, DE 19966





A huge shout out to 1st Class HVAC we were having problems with the heat in our home , I have had to stay awake for the last six days…

Ric Fowler

In the beginning of September(when the temps were in the 90’s)our central A/C died. We called and they sent a technician named Mike who found the problem and got it…

Jean Burkhardt

The problem first came up on Memorial Day. Gary arrived quickly even though it was a holiday. He discovered the problem and had to order a part which they did…

Dolores Fidishun

Every member of the team was professional, courteous, knowledgeable, respectful, industrious, and delivered such high quality product that I was impressed beyond belief. Duane took the time and effort and…

Steve Feher

Our 12 year old Central AC unit burnt out and needed replacing. We contacted our current service company for an estimate to replace. The sales rep showed up with three…

Bruce Temple

Working with Sean Walsh to design and install our replacement HVAC system was a delight. Mr. Walsh was extremely knowledgeable and did a great job explaining our options based on…

N Marvin

Arrived at our second home only to find that our heat would not come on for what was the coldest night of the season so far. Called First Class, as…


First Class is an outstanding company. My Mitsubishi system was installed by them and now a complete of two bath breakdown and replacement of bath items and pipes was completed…