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Residential, Commercial and Industrial

Since 1929 Deiter Bros. has been providing comfort to Lehigh Valley Families and businesses. Deiter Bros. is a Heating Contractor, Air Conditioning Contractor, and HVAC Contractor specializing in all forms of Heating, Air Conditioning and Mechanical work.

We provide our services to Residential, Commercial and Industrial clients as well as Custom Home Builders, Architects, and engineers.

Each of our clients has different needs when it comes to indoor comfort. We do not provide a cookie cutter approach to any HVAC project. Each job is unique and is handled from beginning to end by your Comfort Advisor.

We have provided solutions for many types of challenges. Old Home retrofits, Church retrofits as well as new construction, Radiant heat applications, Snow melting applications, large restaurants, clubs, banks and Hotels.

If you are looking for a Company that can offer you a custom solution, at a great value you found it!

Be sure to check out our "LOW COST GUARANTEE"! Low Price Guarantee

We install and service all major brand heating and air conditioning equipment. We are a Heating Equipment Supplier of various brands of heating and air conditioning equipment, including our recommended lines, which are the Lennox line of heating and air conditioning and Buderus boilers.

Not sure if it is time to replace your comfort system? Click here to use our Repair vs. Replacement Calculator.

Wondering how much a new comfort system can save you each month on heating and cooling? Click here to use our Energy Savings Calculator.

To schedule an appointment with one of our Comfort Advisors, please schedule an appointment online or call us at 1-800-DEITER-1.

Lennox       Bosch Gas, Oil-Fired & Condensing Boilers       Rinnai Mitsubishi

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