Basement Moisture Sealing & Water Proofing IN DELAWARE & MARYLAND

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Basement moisture sealing and water proofing is ideal for unfinished basements to ensure that your basement is staying moisture and leak free and that you can feel safe with any personal items that are stored or kept in your basement. We also VERY highly recommend that you have your basement water proofed before starting or adding onto finished portions of your basement to ensure that the room will stay moisture free and in turn much more unlikely to generate mold or water damage between the walls in your basement after finishing.

Benefits of Water Proofing

-Health protection. Dormant water can result in dangerous bacteria and mold to grow in your basement and potentially affect your whole home’s air safety, in addition to making unsafe conditions in your basement.

-Pest protection. Dormant water can be a breeding ground for unwanted pests and animals in your home and basement.

-Increase structural integrity. Condensation and increased moisture buildup due to water and humidity in your basement can lead to future structural issues that could easily be avoided.

-Efficient Use of Energy. If your instinct is to turn on your air conditioner to remove excess humidity in your home, you’ll unfortunately wind up causing your energy bill to go up – because more air means more energy.

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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…