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R. Poust Heating & AC Services in Denville

For over 45 years the professionals at R. Poust Inc., have proudly served the business owners and residents of Denville with top-quality installations, maintenance, and repair of a variety of heating and air conditioning needs.

Every member of the R. Poust Inc. team is devoted to delivering top-notch care and service to our customers. Our team of clean and courteous technicians will treat your home with reverence, and will leave the work area clean and organized. Our office is totally computerized, so we can easily monitor the service history of your unit and help you to make sure all recommended maintenance is carried out.

Our team of expert technicians are highly-trained in the most current installation operations and every one of them is certified and approved by the EPA to work on systems that contain R410A & R22 refrigerant. Our business is fully insurance and offers a 1-year warranty on all labor for every air conditioning and heating unit that we provide installation for.

Heating Services

As a proud dealer of Lennox products, R. Poust Inc., carries a broad variety of reliable and economical furnaces. We are sure you will find a unit that fits your budget and your needs, as our units vary in efficiency from standard to high. Our team of highly-trained installers know about various types of heating units and can provide you with top-quality maintenance, installation, and repair for any of the models that you are interested in.

Cooling Services

During the summer months the cost of cooling your home can account for almost one-half of your monthly power bill. With energy costs consistently rising, owning an air conditioning unit that is energy-efficient is not only important for your home’s budget, but also for potentially gaining valuable tax credits. The cooling professionals at R. Poust, Inc. are well-versed in all details of Lennox brand air conditioners and are dedicated to helping our customers identify the system that will best suit your needs.

Whole-House Humidifiers

Establishing the best level of moisture for your home is instrumental to improving your indoor air quality. If you have too little or too much moisture, your home can begin to grow harmful bacteria that then becomes airborne and puts your family at risk of infection. Having the professionals at R. Poust Inc. install a whole-house humidifier can alleviate this problem by constantly maintaining the proper moisture level in your home.

Business Built on Quality

The team of dedicated professionals at R. Poust Inc. understands the importance investing in home improvements, and the planning that must go into protecting those investments. To prove we understand we offer a one-year labor warranty on any new air conditioning or heating unit that we install and, once the manufacturer’s warranty of that unit expires, we automatically send you a service agreement so that you can easily schedule maintenance checks. Any job that requires ductwork, we fabricate at our facility so that your ductwork is custom-made for your home and provides the best possible fit.

We offer free estimates for all new and replacement heating & cooling equipment.


    At R. POUST, INC., we are committed to ensuring that individuals with disabilities enjoy full access to our websites. In recognition of this commitment, we are in the process of making modifications to increase the accessibility and usability of this website, using the relevant portions of the Web Content Accessibility Guidelines 2.0 (WCAG 2.0) as our standard. Please be aware that our efforts are ongoing. If at any time you have difficulty using this website or with a particular web page or function on this site, please contact us by phone at 973-520-7444; or email us at and place "Web Content Accessibility (ADA)" in the subject heading and we will make all reasonable efforts to assist you.”

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