Commercial HVAC Emergency Service Chicago
HVAC down at your business? D's Air & Heating, Inc. responds fast to commercial heating and cooling emergencies throughout Chicago.
Fast Commercial HVAC Emergency Response
A failed HVAC system means lost revenue, uncomfortable customers, and potential code violations. D's Air & Heating, Inc. provides emergency commercial HVAC service throughout Chicago. We diagnose and repair rooftop units, boilers, split systems, and more. $149 emergency diagnostic fee. IL License #2183457.
Emergency Services We Handle
Rooftop Unit Emergency Repair
No heat or no cooling from your RTU? We diagnose and repair all major brands fast.
Commercial Boiler Emergency
Boiler lockout, no heat, or pressure issues — we respond to commercial boiler emergencies.
Refrigerant Leak Response
AC not cooling? We locate and repair refrigerant leaks and recharge your system.
Electrical & Controls Failure
Blown fuses, failed contactors, bad control boards — fast electrical diagnosis and repair.
Gas Valve & Ignition Issues
No heat due to ignition failure or gas valve problems — we carry common parts on our trucks.
After-Hours Service
HVAC emergencies don't wait for business hours. Call (773) 940-0965 for urgent service.
Service Call Pricing
Commercial Emergency Service Call
$149
Applied toward repair if you proceed same visit
Standard Commercial Service Call
$95.35
Business hours, non-emergency
Frequently Asked Questions
HVAC Down? Call Now.
D's Air & Heating, Inc. — fast commercial HVAC emergency response in Chicago. IL License #2183457.
Why Chicago Homeowners Trust D's Air & Heating
Licensed & Insured
IL License #2183457
Serving Chicago
Since 2009
Authorized Dealer
Multiple Brands
No Contracts
Ever — Guaranteed
Permit Pulled
Every Installation
Professional Standards
Code-Compliant Work
EPA Certified
Mainstream Engineering
R-410A Certified
Mainstream Engineering
Why Choose D's Air & Heating, Inc.?
Chicago's trusted HVAC company since 2009 — licensed, insured, and committed to honest workmanship on every job.
Experience Since 2009
D's Air & Heating has served Chicago homeowners and businesses since 2009. Over 15 years of local HVAC experience means we've seen every type of system, every Chicago building configuration, and every challenge the city's climate presents.
Manufacturer-Trained Technicians
Our technicians receive ongoing manufacturer training and certification. We install Lennox, Goodman, Amana, Daikin, Sinclair, Weil-McLain, Peerless, and other leading brands — and we know each system inside and out.
Licensed, Insured & Permitted
D's Air & Heating holds Illinois HVAC License #2183457 and carries full liability insurance. We pull City of Chicago permits on every installation — protecting you legally and ensuring the work meets code.
Honest Recommendations
We tell you what you need — not what generates the highest invoice. If your system can be repaired cost-effectively, we'll say so. If replacement makes more sense, we'll explain exactly why. No pressure, no upselling.
Local Chicago Expertise
We know Chicago's housing stock — two-flats, greystones, bungalows, vintage buildings with steam heat, modern construction with forced air. We size and install equipment for the specific demands of Chicago homes and Chicago winters.
Long-Term Customer Support
Our relationship doesn't end at installation. We register your equipment for warranty, remain available for follow-up questions, and provide ongoing maintenance to keep your system running at peak efficiency for years.
What Chicago Homeowners Should Know About Boiler Repair
Most Common Boiler Problems
Frequent boiler failures in Chicago include: low water pressure or water level (hot water and steam systems respectively), failed circulator pump (no heat distribution), faulty pressure relief valve, pilot light or ignition failure, zone valve failure, and kettling (rumbling noise caused by limescale buildup on the heat exchanger).
Steam Boiler Specific Issues
Steam systems require proper water level maintenance. Too little water triggers the low-water cutoff and shuts the boiler down. Too much water causes water hammer — the banging and clanking you hear in the pipes. Proper water treatment and annual maintenance prevent most steam boiler problems.
When to Repair vs. Replace
Boilers last 25–35 years with proper maintenance. If your boiler is under 20 years old and the repair is under $1,500, repair usually makes sense. If it's over 20 years old, requires a major component (heat exchanger, gas valve, control board), or has visible corrosion, replacement is often the better investment.
Emergency Boiler Service
A boiler failure in a Chicago winter is an emergency. D's Air provides priority service for no-heat calls. If you smell gas near your boiler, leave the building immediately, do not operate any switches, and call the gas company and 911 before calling us.
What to Expect From Your D's Air Boiler Service Call
Scheduling
Call or book online. Priority scheduling available for no-heat emergencies.
Diagnosis
Our technician performs a full boiler diagnostic and explains the problem in plain language.
Written Estimate
We provide a written repair estimate before any work begins.
Repair
We complete the repair using quality parts and run the system to verify the fix.
Safety Check
We test all safety controls and verify proper pressure and temperature before we leave.
Follow-Up
We explain what was repaired and recommend any preventive maintenance.
D's Air Repair Standards — Every Boiler Service Call
- Full system diagnostic before any repair recommendation
- Written estimate provided before any work begins
- Water pressure and temperature verification after repair
- Safety control test — LWCO, pressure relief, high-limit
- Gas pressure test after any gas valve or burner work
- Combustion analysis and CO check after any burner work
- System run test — minimum 2 full heating cycles
- No upselling — we recommend only what is needed
- $95.35 diagnostic fee applied toward repair cost
What Our Customers Say
Based on Google Reviews — D's Air & Heating, Inc.
Marcus T.
Furnace Replacement
"D's Air & Heating did an outstanding job replacing my furnace. Darryl was professional, on time, and explained everything clearly. The installation was clean and the system works perfectly. Highly recommend."
Latoya W.
Boiler Repair
"Called D's Air when my boiler stopped working in January. They came out the same day, diagnosed the problem quickly, and had it running again within hours. Fair pricing and excellent service."
James R.
AC Installation
"Installed a new central AC system for us this summer. The crew was respectful of our home, cleaned up after themselves, and the system runs quietly and efficiently. Very satisfied."
Ready to Work With Chicago's Trusted HVAC Company?
D's Air & Heating, Inc. — Serving Chicago Since 2009. Licensed, Insured, No Contracts.