Furnace, Boiler & Heating HVAC Services in Des Plaines, IL
Chicago winters are unforgiving. We repair, maintain and install furnaces, boilers and heat pumps for homes and commercial buildings in Des Plaines and across Chicagoland — including no-heat calls, heating system replacement and yearly maintenance.
Heating equipment in the Chicago area works hard for roughly half the year, and it almost always fails on the coldest night rather than during a mild week. The most common calls we get are furnaces that short-cycle or will not ignite, boilers losing pressure, uneven heat between floors, and thermostats that were never set up correctly for the system they control.
On a no-heat call the technician verifies the actual fault — igniter, flame sensor, pressure switch, circulator, control board — before recommending anything. Common parts ride on the truck, so a large share of repairs finish on the first visit. If a system is genuinely at the end of its life, we say so and show you the repair-versus-replace math instead of pushing equipment.
For replacements we size the system to the house rather than matching whatever was there before, because an oversized furnace short-cycles, heats unevenly and wears itself out early. We work on forced-air furnaces, hot water and steam boilers, radiant systems and heat pumps, in both homes and commercial buildings. A fall tune-up before the first hard freeze remains the cheapest way to avoid a January no-heat call.
Tell us what the system is doing when you call — that decides which truck and which parts head to your address.
Buying or managing a property?
Our complete plumbing, gas-line and HVAC inspection checks accessible systems above ground and can include an underground sewer-camera inspection. We inspect accessible furnaces inside and outside, heat exchangers, boilers, water heaters, air-conditioning equipment and outdoor condensers; document equipment age and maintenance condition where determinable; review applicable plumbing-code concerns; and identify visible or verifiable water-service material. You receive a clear report with pictures, condition notes, priorities and practical next steps before you buy, budget or approve major work.
Make sure your furnace passes inspection before winter — schedule an HVAC inspection.
View Plumbing & HVAC InspectionsFurnaces
- Furnace repair
- Furnace installation
- Furnace replacement
Boilers
- Boiler service
- Boiler installation
- Radiant heating
Heat Pumps
- Heat pump repair
- Heat pump installation
Maintenance
- Heating repair
- Heating maintenance
- Seasonal tune-ups
- Thermostat installation
Heating services in detail
Each of these pages covers what we actually do on that job, what it usually costs you in downtime, and when a repair stops making sense.
Furnace Repair
No heat, cold air, short cycling, strange noises — diagnosis and repair on gas and electric forced-air furnaces.
Furnace Installation
Correctly sized furnace replacement with airflow, venting and startup testing done properly.
Boiler Repair
Cold radiators, pressure loss, leaks, banging and gurgling on steam, hot-water and radiant systems.
Boiler Installation
Steam and hot-water boiler replacement sized to the connected load, with the distribution system evaluated first.
Thermostat & Controls
Thermostats that will not call for heat, wrong temperature readings, wiring, zoning and compatibility problems.
Heat Pumps
Central, ducted heat pump repair and installation, including defrost, backup heat and thermostat setup.
Commercial Heating
Rooftop units, unit heaters and building boilers for offices, retail and light industrial space.
No heat and other calls we prioritize
Cold-weather calls get triaged by how fast the building loses heat. Tell us what the equipment is doing when you call and the right truck and parts head your way.
No heat / furnace not turning on
Thermostat, power, filter and safety lockouts get checked first, then igniter, flame sensor, blower motor and capacitor — the parts that fail most often and that we carry stocked.
Furnace short-cycling or blowing cold air
Usually airflow, a dirty flame sensor or an overheating limit switch. We diagnose the cause instead of resetting the unit and leaving.
Boiler not heating, cold radiators
Low-water cutoffs, circulators, zone valves, expansion tanks and radiator venting on steam and hot water systems in older Chicago and suburban homes.
Furnace or boiler replacement
When the repair no longer makes sense we quote replacement equipment sized for the building, and show you the repair numbers next to it so the choice is yours.
Qualifying installations may include our lifetime product, labor and parts warranty program; terms and eligibility apply.
Heating HVAC repair, installation and maintenance in Des Plaines
Our shop sits at 2093 Rand Rd in Des Plaines, so heating work in town and in the neighboring suburbs is the shortest run we make. The work splits three ways: repair when a system has quit or is running badly, installation when the equipment has reached the end of its life or a building is being renovated, and maintenance that keeps the first two from becoming an emergency in January.
That covers gas furnaces, hot-water and steam boilers in older Des Plaines homes and two-flats, heat pumps and dual-fuel systems, ductless mini-splits used for heating as well as cooling, and the thermostats and controls that tie them together. Commercial buildings get the same attention on rooftop heating sections, unit heaters and make-up air.
No heat? What we check first
When a furnace stops producing heat, the cause is usually one of a short list: a thermostat that has lost power or programming, a tripped breaker, a clogged filter that has caused the unit to overheat and lock out, a failed igniter or flame sensor, a bad blower motor or capacitor, or a safety switch doing exactly what it is supposed to do.
Before you call, it is worth checking that the thermostat has batteries, the furnace switch is on, the breaker has not tripped and the filter is not filthy. If all of that looks fine, the diagnosis needs tools. We identify the failed component, quote the repair, and carry the parts that fail most often so heat is usually restored on the same visit.
A furnace that is not turning on, one that starts and then shuts off, or one blowing cold air usually stops somewhere in the ignition, inducer or pressure-switch sequence. If the display says heat is on but nothing happens, start with thermostat and control checks. Water near the equipment or a repeated lockout often points to a clogged condensate drain causing a no-heat condition, and a tripped rollout switch should never be reset repeatedly.
Furnace repair, and when replacement makes more sense
A repair is usually the right answer on a furnace that is still in the middle of its service life and has not had a string of failures. The picture changes when the unit is old, the repair is expensive, the heat exchanger is compromised, or the same system has needed attention two or three winters in a row.
We give you the numbers both ways: what the repair costs, what it realistically buys you, and what replacement equipment would cost installed. If a cracked or failing heat exchanger turns up we will show you the inspection and explain the safety implications plainly, because that is one of the few cases where continuing to run the equipment is not an option.
Boilers and radiator heat in older homes
Steam and hot water heat is still common in Chicago two-flats, greystones and older suburban homes, and it behaves nothing like forced air. We service low-pressure steam and hot water boilers: low-water cutoffs, sight glasses, pressuretrols and aquastats, expansion tanks, circulators, zone valves and radiator vents.
Uneven heat between floors or between units is usually a venting and balancing problem, not a reason to replace a boiler that still has years of service in it. We work the balancing first and talk about replacement only when the equipment genuinely warrants it.
Cold radiators, pressure loss and banging pipes are covered on our boiler repair page, and sizing, venting and startup testing on our boiler installation page.
Thermostats and zoning
A surprising number of comfort complaints trace back to controls rather than equipment. A thermostat mounted on an exterior wall or in direct sun reads the wrong temperature. A programmable schedule nobody set fights the household's actual routine. In zoned systems, a stuck damper or a failed zone board can make one floor unbearable while the equipment looks perfectly healthy at the furnace.
We install and configure standard, programmable and smart thermostats, and we troubleshoot zone controls before recommending equipment — which is often the difference between a service call and a replacement quote.
Heating maintenance and efficiency
A yearly heating tune-up before the cold sets in is the cheapest form of insurance available on the system. We clean and inspect the burners, check the heat exchanger, test the igniter and flame sensor, verify safety controls, check gas pressure and combustion, inspect the blower and confirm airflow.
Efficiency follows from the same work. A clean, correctly adjusted furnace with an unrestricted filter and sealed ductwork uses less gas to hold the same temperature. If you want a broader look at where energy is going in your building, our energy savings consulting covers heating, cooling and hot water together.
No heat, a furnace that will not ignite or one that short cycles is covered on our furnace repair page. If you heat with a boiler, our guide to 80% AFUE versus a high-efficiency boiler explains what the rating means before you price a boiler replacement, and our energy savings consulting looks at the building as a whole. Results may vary and depend on the equipment, sizing, installation, controls, the building, weather, maintenance and how the system is used.
Commercial heating
For businesses and property managers we service rooftop heating sections, unit heaters, make-up air, commercial boilers and the controls that tie them together. Preventive maintenance visits are scheduled around your operating hours where possible, and we document what was checked so building records stay complete.
Heating service across Des Plaines and Chicagoland
We are based at 2093 Rand Rd in Des Plaines and cover Cook and DuPage county communities from there. See every community we cover on our service areas page, or start with one of these:
We also handle plumbing, cooling and mechanical, and offer energy savings consulting for homeowners and businesses looking at their gas and electric usage.
Common heating questions
Why does my furnace turn on and off every few minutes?
Short-cycling usually points to a restricted filter, a failing flame sensor, an overheating limit switch, or a furnace that is simply oversized for the house. It is worth diagnosing early — the constant starting and stopping is hard on the equipment.
How often should a furnace be serviced?
Once a year, ideally in the fall before the heating season. A tune-up covers combustion, safety checks, the heat exchanger and airflow, and it catches the small failures that would otherwise strand you on a cold weekend.
Repair or replace an older furnace?
As a general rule, if the unit is past roughly 15 years and the repair is a significant fraction of a replacement, replacement usually makes more sense. We give you both numbers and let you decide.
Do you service boilers and radiant heat?
Yes. Many older homes and two-flats around Des Plaines and Chicago run hot water or steam boilers, and we repair, maintain and replace them along with radiant systems.
My furnace will not ignite. What is usually wrong?
The ignition sequence stops for a reason the control board records: a failed igniter, a pressure switch that never closed because the inducer or venting is blocked, a gas supply problem, or a door switch that is not making contact. A technician reads the fault history and works the sequence in order rather than replacing parts one at a time.
Why does my furnace short cycle or blow cold air?
Short cycling is normally a restricted filter, a dirty flame sensor, an overheating limit switch or blocked return air. Cold air at the registers usually means the burners lit and dropped out, or the thermostat fan is set to ON instead of AUTO. Both are worth diagnosing early, because the repeated starting and stopping wears the igniter, blower and heat exchanger.
My furnace runs but the house is cold. What now?
Check the filter and the thermostat setting first. If those are fine, the common causes are a failed flame sensor or igniter, a blower problem, or a safety lockout. Those need a technician to diagnose properly, and the parts are usually on the truck.
Should I repair or replace my furnace?
It depends on the unit's age, the cost of the repair and its recent service history. We quote both so you can compare. A compromised heat exchanger is the one case where replacement is the only safe answer.
How often should heating equipment be serviced?
Once a year, ideally in early fall before the first cold snap. Annual service keeps the system safe and efficient and catches worn parts while the house still has heat.
Guides related to heating
Written by our technicians for homeowners and building owners in Des Plaines, Chicago and the surrounding suburbs.
- What a tripped furnace rollout switch means
Why this safety control shuts the furnace down, how it differs from a high-limit trip, and why repeated resets are the wrong response.
- Boiler running but radiators cold?
Air-bound radiators, circulator and zone-valve faults, and low system pressure — how to tell which one is keeping the heat out of your rooms.
- Boiler repair and maintenance before winter
The signs a boiler needs service, why a fall tune-up matters, and the repair, maintenance and installation help we offer across the northwest suburbs.
- Fall HVAC checklist for Chicago homeowners
The seven checks we tell customers to do every September — furnace tune-up, filter, thermostat, boiler, sump pump, water heater and booking before the rush.
- Signs your furnace needs repair vs. replacement
The noises, short cycling and rising bills that matter — plus the age and cost thresholds we actually use.
- Tankless vs. traditional water heater
If you are replacing a furnace and an aging water heater in the same year, this covers the gas and venting side of the decision.
- Navien tankless maintenance and descaling
Why hard water shortens the life of a tankless unit and what annual service actually involves.
- Navien boilers: installation, service and repair
Condensing boiler and combi-boiler options from a certified Navien installer — sizing, venting, maintenance and error-code troubleshooting.
- Navien furnaces: installation, service and repair
High-efficiency condensing furnace options, what certified installation covers, and the maintenance that keeps one running 15 to 20 years.
Browse every article on our plumbing and HVAC guides page.
Schedule Heating Service
Serving Des Plaines and surrounding Chicagoland communities. Call 847-550-3322 or, in Chicago, 773-250-6060.
Curious how to lower your gas and electric bills? Ask about our Energy Savings Consulting.
Qualifying installations may include our lifetime product, labor and parts warranty program; terms and eligibility apply.
