AC Installation in Flint, MI: Sized for Your Home

Terry Allen Plumbing and Heating provides AC installation in Flint, MI, for homes and businesses, from the in-home assessment to the final airflow check. We are a third-generation, family-owned company that has worked out of Flint since 1964. If you are replacing an air conditioner that has quit or installing new equipment, we assess your home, give you a written quote, and handle the installation with our technicians. Free estimates are available.


Flint summers are short enough that a failing air conditioner is easy to put off until the first heat wave. Planning the replacement before then gives you time to compare options instead of making a rushed decision. Call (810) 232-8270 to schedule your estimate.

Outdoor air conditioner unit beside a brick house, with rocks, shrubs, and a window nearby

How We Size a New System for Your Home

Sizing affects how evenly a system cools and how hard it works, so we assess your home in person rather than over the phone. Our team looks at your square footage, insulation, and existing ductwork, then runs a load calculation to find the cooling capacity your house needs. A unit that is too big cools unevenly and cycles on and off. A unit that is too small runs almost nonstop and still falls behind on hot days.


Before any work begins, you receive a written quote with equipment options at more than one price point, so you can weigh a higher-efficiency system against what it may save on summer electric bills.

What to Expect During Installation

Our technicians handle the installation from start to finish:

  1. Remove the old equipment and prepare the site for the new unit.
  2. Set the new system and connect the electrical, refrigerant lines, and condensate drain.
  3. Start it up and verify airflow, thermostat response, and refrigerant charge before leaving.
  4. Show you how the new system works and answer your questions.

Lennox Equipment for Your Home

Lennox is our leading brand for air conditioners, and we are an authorized Lennox dealer. Our technicians are trained to install and service Lennox equipment, including thermostats and air purification systems, so we can match a system to your home and budget. You can browse the Lennox lineup in the product browser on our homepage before your visit.



If your furnace is nearing the end of its life too, it may make sense to plan both replacements together. Our furnace installation page covers that side of the work.

Paying for a New System

Cost depends on your home’s size, the efficiency rating you choose, and the condition of your ductwork, which is why we price from an on-site assessment rather than a guess over the phone. Qualifying homeowners can finance through Michigan Saves, Turns Financing, and Service Finance Company. Consumers Energy customers may also be eligible for rebates on qualifying energy-efficient air conditioners. Amounts and requirements change, so ask us what is current for the model you are considering, or start with our specials page.

Not Sure Whether to Repair or Replace?

If your air conditioner still runs but struggles, repair may be the better call. Our guide to repairing or replacing an air conditioner walks through the age, repair-count, and energy-bill checks that help you decide. If repair turns out to be the answer, our team also handles AC repair, and we will tell you honestly when a repair stops making sense.

Cooling for Businesses

We provide air conditioning installation for businesses as well as homes. Business owners can call (810) 232-8270 to talk through a building’s cooling needs. For urgent breakdowns, our emergency cooling service for businesses is available around the clock. You can read more on our commercial and residential cooling services page.

Why Flint Customers Call Terry Allen

Terry and LuCille Allen started the company on April 1, 1964, and it is still family-owned, now in its third generation. We have operated from 3621 Fenton Road since 1978, and our technicians dispatch from that same Flint shop. We handle plumbing, heating, and cooling under one roof, so one company can cover all three. We do not upsell equipment you do not need.


Customer reviews are on our Google Maps listing, and the full story of the business is on our about page.

Questions About Installing a New Air Conditioner

  • Will My Existing Ductwork Work With a New Air Conditioner?

    It depends on the condition and layout of the ducts, so we check them during the in-home assessment. Ducts that leak or are poorly laid out can affect how evenly a system cools. If we find that your ductwork needs attention, we will explain what we found and what it means for the price in your written quote.

  • Is a Higher-Efficiency Air Conditioner Worth the Extra Cost?

    It can be, especially for a system you will run hard and keep for years, because higher efficiency typically means lower electric bills each summer. The trade-off is a higher price up front, which is why we quote more than one option and explain the differences between efficiency ratings. If a rebate applies, it can narrow the gap.

  • Does a New Air Conditioner Come With a Warranty?

    Yes, new equipment typically comes with a manufacturer’s warranty, and the terms vary by brand and model. We handle the warranty registration for you. Our own labor and materials warranty is described on our warranty page, and the manufacturer’s warranty takes precedence if the two overlap.

  • When Is the Best Time to Replace an Air Conditioner?

    Before it fails. Planning in spring or early summer lets you compare equipment, financing, and rebates at your own pace instead of in the middle of a heat wave. If your system has already stopped, call (810) 232-8270 and we will help you decide between repair and replacement.

Schedule Your Free Estimate

Call Terry Allen Plumbing and Heating at (810) 232-8270 to schedule a free estimate for AC installation in Flint, or send us a message through our contact page. We serve the surrounding area as well, including Grand Blanc, Davison, Fenton, Clio, Flushing, Mt. Morris, Lapeer, Swartz Creek, and Burton. If your town is not on that list, call and we will confirm whether we can serve you.