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Deiter Bros
Deiter Bros. has been serving local Lehigh Valley Homes and Businesses for over 80 years. Our goal has always been to exceed your expectations.

We have designed this site to provide you with a wealth of information on our many products and services. We are always researching the latest technology in indoor air quality, energy efficient systems, and must have indoor comfort items.
       
enviafuel
Our heating oil is a special formulation we call EnviraFuel®. EnviraFuel® is a Cleaner, Greener Heating Oil that is blended with Bio Heat.

Order Now
       
Signature Series

Just Right.
We routinely service all heating and air conditioning systems. We recommend and install Lennox systems and our own Deiter Signature Series systems.

Need service on your heating or air conditioning system?

Schedule an appointment now!     Click Here for Our Coupon

       
Meter Beater
Take the guesswork out of driving down your energy costs with a Deiter Bros. BPI Certified Home Energy Audit, which includes:
  1. Calibrated Blower Door Test
  2. Thermographic Inspection
  3. Honeywell-Certified Air Sealing & Weatherization
       
Deiter Bros.
Other great areas to browse
       
4 Season Security
We also have a Security Division, 4 Seasons Security. We install and service most major brands of burglar, fire, CCTV and access control systems. We are a GE authorized dealer. GE has designated us a GE Security Pro Dealer. We provide monitoring 24/7 through our state of the art monitoring center staffed with highly trained security professionals.
       

 

 
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Who's Who in business Lehigh Valley
 
 
 
 
Plumbing-Heating-Cooling Contractors Association (PHCC)Air Conditioning Contractors of America (ACCA)Rheem TeamAssociated Builders and Contractors, Inc. (ABC)Better Business Bureau of Washington DC and Eastern PAGreater Lehigh Valley Chamber of CommercePennsylvania Petroleum Marketers and Convenience Store Association (PPMCSA)

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