Heating repair · Northwest Indiana + ChicagolandAC repair · Northwest Indiana + Chicagoland

No heat?AC out?We’re on it.

Furnace and boiler repairAC repair and refrigerant recharges for homes and businesses across Northwest Indiana and Chicagoland. New systems and tune-ups too.

Call (312) 934-8329 Request service

Hablamos español. Llámenos con confianza.

Ver página en español →

Service call: $99.

24/7
Residential & commercial
Fully bonded & insured
Licensed in Indiana & Illinois
Free new-system estimates
Se habla español

What's going on?

Tap one and we'll start the request. Or just call.

Repair

Furnace repair

No heat, cold air, short cycling, or a noise that wasn’t there yesterday.

Get heating help

A new Goodman furnace with fresh venting in a basement

Install

New furnaces

Replacements sized to the house. The estimate is free.

Get a free estimate

A boiler Diego installed, with new copper piping

Boilers

Boiler installs

Hot water and steam boilers, piped and set up right.

Ask about boilers

Tune-up

Heating tune-ups

A once-over before the first cold snap, so the furnace isn’t the surprise.

Book a tune-up

Controls

Thermostats & humidifiers

Thermostats repaired or replaced. Humidifiers for dry winter air.

Get it sorted

Commercial

Shop & garage heat

Unit heaters for shops, garages, and work spaces.

Talk commercial

Swipe for more

Heating season 2026

NIPSCO offers $250 on a qualifying new 95% gas furnace installed by November 30, 2026. Rebates depend on your utility account, eligible equipment, installation date, paperwork and available funds. Check the program requirements for your quote. This year’s rebates

Refrigerant gauges hooked to an air conditioner

Repair

AC repair

Warm air, weak air, or it won’t kick on at all.

Get AC help

Install

Central air

New condensers and full systems. The estimate is free.

Get a free estimate

Two American Standard condensers Diego installed against a brick wall

Refrigerant

Recharges

R-22 and R-410A. On an older R-22 system, we’ll tell you straight whether it’s worth it.

Ask about a recharge

An air conditioner condenser in a landscaped yard

Tune-up

AC tune-ups

Book a central-air tune-up. Ask what the visit includes.

Book a tune-up

A technician fitting a section of ductwork

Air

Ducts & air cleaners

Duct runs, repairs, and cleaner air through the whole house.

Ask about air

Commercial

Rooftop cooling

Condensers and rooftop units for businesses and buildings.

Talk commercial

Swipe for more

How a call goes

Hot to cold
in four steps.

Call any hour

(312) 934-8329, day or night. English or Spanish.

Discuss the visit

Call to discuss the visit and repair options.

Service call: $99.

We find it

Diego or his crew finds the problem and tells you plainly what it needs.

You decide

Straight answers on repairs. Free estimates on new systems.

Recent work

Real jobs.
No stock.

Every photo here is Diego’s own work, from basements to rooftops.

The wrapped Dragon Heating and Cooling van parked on a street — The Dragon truck

A Goodman furnace installed in a basement — Goodman furnace install

A boiler install with new copper piping — Boiler, new copper piping

A new Amana condenser beside a brick house, with the old unit next to it — New Amana condenser, old unit beside it

Two condensers on a flat commercial roof with the city behind — Rooftop condensers

A Goodman furnace with new venting in a basement — Goodman furnace, basement

A commercial unit heater hung in a shop — Shop unit heater

Two American Standard condensers against a brick wall — Two American Standard condensers

Swipe through the jobs

Who you’re calling

Family in HVAC
since 2000.

Diego’s dad got into HVAC in 2000. Diego opened Dragon Heating and Cooling in 2016, and he still does the work himself, with his crew. Calls in English or Spanish.

We install and service Goodman, American Standard, Rheem and Carrier.

We takeCashCheckCredit cardsZelle

24/7
Furnace quits at 2 a.m.? Call anyway.
IN + IL
Licensed in Indiana & Illinois.
Bonded
Fully bonded and insured.
Free
Estimates on new systems.
Español
Se habla español. Call in Spanish.
Homes
+ shops
Residential and commercial.

Service area

50 miles
from Whiting.

We’re based in Whiting, Indiana, and work across Northwest Indiana and Chicagoland, about 50 miles from Whiting. Call (312) 934-8329 to check your address before booking.

Northwest Indiana

Based in Whiting. Call to confirm your address.

Chicagoland

About 50 miles from Whiting. Call to confirm.

Approximate service area — call to confirm

Request service

Tell us what’s going on.

No heat or no AC? Call. It's faster than the form, any hour of the day.

Call (312) 934-8329