Frequently asked questions

Yes! We provide free estimates for new HVAC installations and replacements, so we invite you to contact our office today and we'll be glad to have one of our sales representatives meet at your convenience and recommend a HVAC solution that meets your needs and budget.  If you need need service for an existing AC or furnace system, we charge a $99 service call for our technicians to come out.

We offer financing through a 3rd party lender for customers that qualify, including 6 months "same as cash" financing on new installations!  Contact us for more information on our financing options. 

We stand by every job we do, and promise that you will be satisfied with your heating and/or cooling system installed/serviced by us.  If your new HVAC system isn't performing to your satisfaction, we will correct/replace the equipment for up to 3 years at no charge to you.  Our duct work installed by our technicians also comes with a lifetime guarantee for as long as you own your home. For more information on our warranty and satisfaction guarantee, please click here or contact our office.  

We are Michigan's Trane Comfort Specialist! As a certified Trane dealer, we offer our customers great prices on high-quality heating and cooling systems from Trane.  We also provide expert service, sales, and installation for all major furnace and AC brands, including Carrier, Honeywell, Lennox, American Standard, Bryant, SpacePak, and more. We'd be happy to provide a quote on a new Trane system, or installation of another brand that you already own.

Our service area includes Macomb and Oakland County where we provide complete heating and cooling services, sales, and installation, available 24 hours. Our main office is in Center Line and we have branch locations in Troy, Warren, Hazel Park, Macomb, and Sterling Heights as well.

Selecting the perfect heating and/or cooling solution for your home or office begins with contacting us and speaking with our knowledgeable staff.  We can answer any questions you may have, and schedule a free home comfort consultation at your convenience.  Your HVAC sales specialist will walk you through our large selection of equipment options, and eventually find the right solution that fits your home comfort needs, and budget.

For duct cleaning, we happily refer our customers or anyone searching for duct cleaning to Safety King Air Duct Cleaning.  They have an outstanding reputation and can accommodate any duct cleaning or sanitizing needs. You can find them online at www.safetyking.com.

We specialize in the sales and installation of PCO UV air purification systems.  These units provide state-of-the-art UV technology that installs easily into your air ducts, eliminating bacteria, mold, dust, odors, and other airborne pollutants at the microscopic level. Visit our UV air filtration page for more information and pricing.

Our service call special is $99, which includes a 15-minute equipment inspection by our technician. If the technician identifies any problems, they will provide an on-site estimate for repairs/service. The $99 service call fee is not deducted from any repair or installation job thereafter.

Yes. We carry parts for all major brands, including Carrier, Lennox, Trane, American Standard, Honeywell, SpacePak, and more. Contact us for parts inquires.

Yes. Over the years we have professionally installed hundreds of hot water heaters for Michigan homeowners. Contact our office to get a free estimate.

Absolutely. Over the years, there have been significant advances in heating and cooling technology. As many homes or facilities can't support conventional HVAC duct systems, there are many options on the market for duct-less, or small-duct HVAC systems. For ductless, or wall-mounted HVAC systems, we offer expert service and installation for Trane Ductless Systems. For homes or facilities that need a more efficient duct system that can't support conventional (bulky) duct-work, we provide expert service and installation for Unico Small Duct Systems, where compact, flexible coils replace standard ducts, delivering heated or cooled air to every space. This solution requires little, or no remodeling. Contact our office for more information.

With a Zone Damper System installed by our certified technicians, you can have complete control over the temperature in any space in your home or office. Each room has its own smart thermostat where you can easily regulate and automate the climate in any space. Although these systems are typically installed in new builds, we can also install them in most homes or facilities.  Contact our office for more information.

Servicing or installing window AC units does not fall within our expertise, we do offer service and installation for wall-mounted HVAC units, however.

A.S. Contrera LLC is our commercial HVAC division. We have a large list of commercial clients that we serve across Southeast Michigan, and can fulfill any commercial HVAC contracting needs you may have.  We have a full-service sheet metal fabrication shop at our Center Line location where we can accommodate any sized HVAC customization project.  Some of our commercial HVAC specialties include Rooftop Units (RTU), Tube Heaters, Makeup Air, Kitchen Hoods, Kitchen Ventilation, and more. Visit our commercial HVAC website for more information.

At the very minimum, all of our heating and cooling systems meet the latest standards for energy-efficiency, while we also have equipment that will provide maximum efficiency-ratings (check out our Energy Savings Calculator).  Typically, the higher the rating, the more expensive the equipment.  We welcome you to contact us and we'll help you pick the best equipment based on your energy-consumption needs, and budget.