Thornton Heating Service, Inc.
When the Weather’s at its Worst. We’re at our Best.
Emergency Hours: 24/7
Thornton Heating Service, Inc.
When the Weather’s at its Worst. We’re at our Best.
Emergency Hours: 24/7
Thornton Heating Service provides heating and cooling in Rogers Park, from emergency furnace repair to full system replacement. We repair, maintain, install, and replace furnaces, boilers, and air conditioning across the neighborhood. Many Rogers Park buildings run on steam or hot water boilers with cast iron radiators, and many have no ductwork at all, so we also install high velocity SpacePak and ductless mini split systems that cool without ducts. Newer homes west of Clark get standard furnace and central AC service.
Our technicians are NATE certified and available 24 hours a day for no heat calls.
If your radiators are cold, banging, or heating some units and not others, the problem is usually the boiler or the pipe run feeding it. Common faults we fix: low water cutoff failures, pressure and aquastat problems, leaking or stuck steam traps, air bound hot water loops, circulator pump failure, and radiator valve repair. When a boiler is beyond economical repair, we size the replacement to the building’s actual heat loss rather than matching the old nameplate, which is where oversized systems and short cycling come from. The new unit ties into your existing radiators and pipe. On a shared system, one failure takes out every unit in the building, which is why we prioritize these calls in winter.
High velocity runs a small air handler in an attic, closet, or dropped soffit, feeding two inch flexible tubing that snakes through existing wall and joist cavities. Outlets are the size of a coffee cup lid. It cools the whole unit from one thermostat and keeps the plaster and trim intact.
Mini splits mount a head in each room, so every room gets its own temperature and only the ones in use run. That suits a top floor unit that bakes in August while the north bedroom stays cold. Each head needs a line set path back to the outdoor condenser, so unit layout and where the condenser can sit determine what’s possible.
Most furnace calls come in as no heat, short cycling, or a blower running without warm air. Typical causes are igniter and flame sensor failure, a clogged filter choking airflow, pressure switch or inducer motor faults, and cracked heat exchangers, which we condemn rather than patch. Annual furnace maintenance prevents most of it: burner cleaning, flame sensor service, gas pressure and combustion checks, blower inspection, and a safety check on the heat exchanger and flue. For furnace replacement in converted buildings, existing duct runs are often undersized for a modern high efficiency unit, so we check static pressure before quoting rather than after installation.
Thornton technicians provide 24 hour a day emergency care for your heating and cooling system. The technicians receive the best training not only on the equipment, but also in cleanliness and expediency. No matter what the emergency is, you can count on Thornton to give you fixed pricing and quick service that will have you up and running again in no time.
The water heaters and boilers that Thornton sells give you significant savings on your monthly utility bills as well as a higher standard for comfort within your home. Only the top brands are considered, so Rogers Park residents get the best of the best.
A failed boiler in a three flat is not one service call, it is every unit without heat. We work with condo associations, small landlords, and owner occupants on shared heating systems, water heater replacement, and equipment mounted on shared walls or roofs.