FAQs

Yes, we do! We proudly offer financing through Wells Fargo on system installations and some repairs. With several financing options available, we can gladly find the best fit for your budget. (*subject to credit approval)

We proudly sell and install American Standard equipment. American Standard has been committed to innovation and home comfort since the 1880s. Their HVAC systems are tested for durability and efficiency so that you can enjoy comfortable air for many years.

• For commercial and rental properties system installations have a 5-year parts and one year labor warranty
• Repairs come with a 1-year parts and labor warranty for Maintenance Members, or standard 90-days labor and 1-year parts.

Yes, become a Maintenance Member and Hoock's Heating & Cooling provides two cleaning maintenance visits per year, along with many additional benefits. To learn more visit our maintenance page.

Yes, we are licensed, bonded, and insured.

A good rule of thumb is the 50% rule: if a repair costs more than half the price of a new system, replacement usually makes more financial sense. Age matters too — furnaces typically last 15-20 years and AC units 10-15 years, so we recommend starting to save around the 10-year mark, since a replacement is a significant expense and becomes increasingly likely within the following 5-10 years. And even if your furnace is still going strong, we always recommend replacing the full system together rather than pairing a new AC with an older furnace, since mismatched equipment limits the efficiency of the new unit. Give us a call and we'll walk you through the numbers honestly.

We are based in Foristell and proudly Wentzville and the surrounding communities, including O'Fallon, St. Charles, St. Peters, Dardenne Prairie, Troy, Warrenton, and more.

Most standard system installations are completed in one day. More complex jobs, like ductwork modifications or system replacements with zoning, may take longer — we'll give you a clear timeline before we start.

Yes, we provide free estimates on new system installations so you know exactly what to expect before committing.

With regular HVAC maintenance, most furnaces can last 15-20 years and AC units 10-15 years. Skipping tune-ups can significantly shorten that lifespan.

A standard 1” filter should be changed monthly or every other month. An upgraded 4” media cabinet style filter can be changed every 3-6 months depending on pets or allergies. A clogged filter makes your system work harder and raises your energy bills.

This is often a sign your system is working overtime — usually due to a dirty filter, low refrigerant, a failing part, or a system that's simply undersized or aging out. A maintenance visit can usually pinpoint the cause.

Absolutely. We install air purifiers, humidifiers, and dehumidifiers to help with allergies, dust, and stuffy air. Visit our indoor air quality page for options.

Yes. All of our technicians are trained, licensed, and background-checked, and we are fully licensed, bonded, and insured as a company.