24/7 emergency service available

Air conditioning condensers installed on a Chicago rooftop with the skyline behind them

Serving Chicago & the near suburbs Licensed · Bonded · Insured

Your home should hold its temperature. We make sure it does.

Heating, air conditioning and insulation for Chicago homes and buildings — sized correctly, installed cleanly and priced in writing before we start.

Same-day service calls · 24/7 emergency service available

Furnaces & boilers Central air & mini-splits Attic insulation & air sealing

We install and service equipment from the manufacturers that hold up here

0Years working Chicago housing stock
0Systems installed and serviced
0Emergency no-heat, no-cool response
0Written pricing before work begins

Why homes here waste money

Save money on utility bills while reducing your environmental impact.

Most Chicago homes lose comfort in two places at once: equipment that was never sized to the house, and an attic that leaks conditioned air all year. Fix one and you get a partial result. Fix both and the house finally holds its temperature.

We do heating, cooling and insulation under one roof, so nobody gets to blame the other trade — and you get one number for the whole picture.

How we work

Central air, condensers & ductless

Comfortable, reliable cooling at an affordable price

When summer heat becomes overwhelming, your home should be a place of comfort. We install, replace and repair residential air conditioning systems with a focus on dependable performance, honest pricing and long-term efficiency.

  • Central air conditioning systems
  • Condenser units
  • Air handler cooling components
  • Refrigerant and airflow issues
  • Thermostats and control problems
  • Ductless mini-split installation

If your AC isn’t cooling properly, running constantly, making unusual noises, or increasing your energy bills, we carefully diagnose the issue and provide straightforward, cost-effective solutions — without unnecessary upselling.

Our priority is simple: restore comfort to your home quickly, efficiently, and at a price that makes sense.

Newly installed Rheem outdoor condenser unit on a concrete pad behind a Chicago home Air Conditioning · Chicago
Additional air conditioning work by Thermo Services LLC

Furnaces, boilers & heat pumps

Heat that holds through a Chicago winter

When the wind comes off the lake, your furnace is the only thing standing between your family and a 10-degree night. We install, repair and maintain residential heating systems built to run hard for years — not just until the next cold snap.

  • Gas furnace installation & replacement
  • Furnace repair and no-heat diagnostics
  • Boiler service and radiator heat
  • Heat pumps and ductless heating
  • Thermostat upgrades and zoning
  • Annual tune-ups and safety inspections

If your furnace is short-cycling, blowing cold air, tripping the limit switch or filling the house with dry, uneven heat, we find the actual cause — cracked heat exchanger, failing igniter, blocked flue, undersized return — and we tell you plainly what it costs to fix versus replace.

Our priority is simple: get the heat back on fast, keep it running safely, and give you a system that does not surprise you in February.

High-efficiency gas furnace installed in a residential utility closet with PVC venting Heating · Chicago
Additional heating work by Thermo Services LLC

Attics, walls, crawl spaces & air sealing

Proper insulation for comfort, energy savings & a clean attic

Proper insulation is one of the most important investments you can make in your home. When installed correctly, it helps regulate indoor temperatures, reduce energy waste, and lower monthly utility bills.

  • Attic insulation installation
  • Insulation upgrades and replacements
  • Air sealing services
  • Removal of damaged or outdated insulation
  • Spray foam for walls and rim joists
  • Crawl space vapor barriers

Poorly installed insulation can lead to heat loss, uneven temperatures, moisture problems, and higher energy costs. That’s why we focus on proper coverage, correct R-values, and clean workmanship on every project.

Our goal is simple: improve your home’s comfort, protect your energy efficiency, and leave your attic in clean, professional condition.

Even blanket of blown-in cellulose insulation covering an attic floor between rafters Insulation · Chicago
Additional insulation work by Thermo Services LLC

What you actually get

Six things every job includes, whether it is a $300 repair or a full system.

Straight pricing, in writing

You get the number before we start, not after. No surprise line items and no pressure to buy equipment your home does not need.

Diagnosis before parts

We find the actual cause of the problem instead of swapping components and hoping. That is why our repairs tend to hold.

Correct sizing, every time

An oversized system short-cycles, wears out early and leaves rooms uneven. We size to the house, not to the invoice.

HVAC and insulation under one roof

Most companies do one or the other. Fixing the envelope and the equipment together is what actually drops the bill.

Clean job sites

Floors protected, containment where needed, attic left tidy. You should not be able to tell we were there except for the work itself.

Built for Chicago conditions

Lake-effect winters, brutal August humidity, century-old brick two-flats. We install for the climate and the housing stock we actually work in.

Start to finish

Four steps, no surprises in between.

Tell us what is happening

Call or message us on WhatsApp. Describe the symptom in plain words — cold rooms, loud unit, rising bill. We ask a few questions and book a time that works.

On-site assessment

A technician inspects the equipment, ductwork and envelope, takes measurements and shows you what they found before anything is quoted.

Written options and price

You get a clear scope with the repair option and the replacement option side by side, with what each one costs and what each one buys you.

Install, test, walk through

We do the work, verify airflow and temperatures, clean up completely and show you how to run the system before we leave.

Recent work

Real installs, real attics, real Chicago rooftops.

See the full gallery
Three air conditioning condensers installed on a flat Chicago rooftop with the city skyline behind Air Conditioning
Three-unit rooftop condenser bankMulti-unit building · West Town
Large Rheem condenser unit installed on a pad beside a brick Chicago home Air Conditioning
High-efficiency condenser replacementSingle family · Northwest Side
Rheem condenser mounted inside a steel protection cage against a brick wall Air Conditioning
Elevated condenser on protective frameTwo-flat · Logan Square
Rheem air conditioning condenser installed in a narrow side yard on a level pad Air Conditioning
Side-yard AC installationSingle family · Northwest suburbs
Wall-mounted ductless mini-split indoor unit installed near a window Air Conditioning
Ductless mini-split headRoom addition · Chicago
High-efficiency gas furnace with PVC intake and exhaust in a residential closet Heating
High-efficiency furnace installUtility closet · Chicago

Chicago customers trust our services

What people say after the crew leaves.

Our furnace quit on the coldest night of the year. They answered the phone, came out the same evening and had heat running again before midnight. Clear pricing, no pressure to replace anything we did not need.

Olivia B.Portage Park · Furnace replacement

The upstairs bedrooms were always ten degrees colder than the rest of the house. They air sealed the attic and topped up the insulation, and the difference was obvious the first week. They also left the attic cleaner than they found it.

Linda L.Oak Park · Attic insulation

Got three quotes and theirs was the only one that explained why the old unit was undersized. Install crew was on time, protected the floors and walked me through the thermostat before they left.

Ethan C.Logan Square · AC installation

Diagnosed a refrigerant leak two other companies missed. Fixed it for a fraction of what I was quoted for a full replacement. Honest people.

Marcus R.Berwyn · AC repair

They foamed the rim joists and the whole basement stopped feeling damp. Gas bill dropped noticeably over the winter. Would hire again without hesitation.

Danielle P.Norridge · Spray foam

Questions we get every week

Straight answers before you pick up the phone.

Most service calls in the Chicago area are scheduled same day or next morning. No-heat and no-cool emergencies move to the front of the line — call us and we will tell you honestly when a technician can be at your door.

Estimates for installation and insulation projects are free, including the walkthrough and the written scope of work. Diagnostic service calls carry a flat trip fee that is applied to the repair if you move forward with us.

It depends on age, repair cost and efficiency. As a rule of thumb, if the unit is past twelve years old and the repair costs more than a third of a new system, replacement usually wins. We show you both numbers and let you decide — we do not sell equipment you do not need.

Our climate zone calls for roughly R-49 to R-60 in the attic, which is about 16 to 20 inches of blown insulation. Most older Chicago homes we open up are sitting at R-19 or less. Air sealing first, then depth — in that order — is what actually lowers the bill.

Air sealing and attic insulation are the two upgrades with the most consistent payback in older Chicago housing stock. Savings depend on your current envelope, but homeowners commonly see a meaningful drop in winter gas use and a house that holds temperature far better in summer.

Yes. We service rooftop packaged units, multi-unit condenser banks and light commercial systems in addition to residential work. Tell us the building type and equipment when you reach out.

We work with Rheem, Carrier, Weil-McLain, Goodman and Mitsubishi Electric among others. Brand matters less than sizing and installation quality — a correctly sized mid-tier system beats an oversized premium one every time.

Free quote · No obligation

Stop paying to heat and cool the outside of your house.

Tell us what your home is doing wrong. We will tell you what it costs to fix — before anyone touches a tool.