Serving Joliet, Illinois
Heating and cooling repairs, replacement and maintenance for Joliet homes. Tell us what your system is doing, or request an estimate for a new furnace, air conditioner or complete system.
(630) 318-6246Family-owned. Based in Plainfield.
FortHouse serves Joliet with furnace and AC repair, replacement and maintenance. A repair diagnostic costs $119 during regular hours. Furnace replacement is $5,000–$9,000, central AC is $5,000–$10,000, and a complete system is $10,000–$20,000. Replacement estimates are free. FortHouse confirms after-hours fees and availability when booking; repairs are quoted after diagnosis.
Replacement prices are planning ranges, not a quote. FortHouse provides a written price before work begins.
Tell FortHouse what changed, or choose the help your home needs.
Explore how your home and its heating and cooling equipment work together.
A home, working togetherThe furnace, airflow and thermostat work together. We look beyond the symptom to understand why your home is not heating comfortably.
Explore heating service
Outdoor equipment & indoor comfortYour outdoor unit and indoor coil depend on proper airflow and setup. Tell us about warm rooms, long run times or humidity that never seems to clear.
Explore cooling serviceReady for the season aheadA seasonal visit checks equipment condition, filter access and the parts that keep your system operating. Findings help you plan the next step.
Explore maintenanceConcept illustration · Simplified equipment and airflow, not an installation diagram.
FortHouse’s regular-hours furnace diagnostic is $119; repairs are quoted after diagnosis. FortHouse checks no-heat faults and explains the repair before work begins.
Furnace replacement is $5,000–$9,000, with a free estimate. FortHouse uses a Manual J load calculation and checks ducts, venting and equipment access to plan the installation.
FortHouse’s regular-hours AC diagnostic is $119; replacement AC is $5,000–$10,000. FortHouse checks electrical, refrigerant and airflow faults. For replacement, FortHouse reviews sizing, duct connections and electrical needs.
Ask about heat pumps or ductless options when planning a different system.
| Service | Typical price | What shapes the price |
|---|---|---|
| Repair diagnostic | $119, regular hours | Find the fault; confirm after-hours fees when booking. |
| Furnace repair | Quoted after diagnosis | Fault and parts needed; diagnostic charged separately. |
| AC repair | Quoted after diagnosis | Electrical, refrigerant or airflow faults; diagnostic charged separately. |
| Furnace replacement | $5,000–$9,000 | Efficiency, venting, ductwork and installation scope. |
| Central AC replacement | $5,000–$10,000 | Capacity, efficiency, line-set condition and electrical work. |
| Furnace and AC together | $10,000–$20,000 | Equipment sizing, ductwork and the combined installation scope. |
| Furnace or AC tune-up | $119 per system | Seasonal condition check; existing breakdowns may need diagnosis. |
Replacement estimates are free. Planning ranges are not quotes; FortHouse confirms scope, repair prices and after-hours fees before work.
Start with the condition of the system, not an arbitrary birthday.
FortHouse compares the fault, repair scope and comfort concerns. A failed part alone does not call for replacement. FortHouse checks each system separately and puts the options in writing.
Understand whole-system replacement Get a Free Replacement EstimateFortHouse furnace and AC tune-ups are $119 per system. Furnace visits check the heat exchanger, combustion, carbon monoxide and safety controls. AC visits cover coils, refrigerant, electrical testing and drainage.
Maintenance cannot prevent every failure. An existing breakdown may need a diagnostic visit.
Joliet’s historic residential districts include Upper Bluff and East Side. FortHouse assesses each home’s current ducts, equipment access and comfort concerns.
A larger unit is not automatically better. DOE explains that oversized cooling equipment can short-cycle and control humidity poorly.
Source: U.S. Department of Energy, equipment sizingShare the symptoms and address. FortHouse confirms the visit and availability.
FortHouse explains findings, scope and price before approval.
After approved work, FortHouse checks operation and explains the results.
FortHouse charges $119 for a regular-hours diagnostic. Furnace replacement is $5,000–$9,000, central AC $5,000–$10,000, and a complete system $10,000–$20,000. Tune-ups are $119 per system. Replacement ranges are for planning; estimates are free. Repair prices and after-hours fees are confirmed separately.
FortHouse serves Joliet from Plainfield. Call with your address and symptoms, or book online, to confirm a visit. FortHouse has no Joliet storefront.
FortHouse provides free replacement estimates for new equipment. Troubleshooting a breakdown is a separate $119 regular-hours diagnostic. FortHouse explains the repair price before you approve work.
FortHouse answers emergency HVAC calls 24/7. Call to confirm technician availability and after-hours fees. Phone coverage does not guarantee immediate arrival; use the phone for urgent requests.
FortHouse considers the fault, repair scope, equipment condition and comfort concerns. A failed part alone does not require replacement. FortHouse explains your options in writing before you decide.
FortHouse checks uneven temperatures by considering duct airflow, thermostat placement, added rooms and equipment size. Describe which rooms feel different and when. A larger unit is not automatically the answer.
FortHouse offers furnace and AC tune-ups at $119 per system. Furnace visits check combustion and safety; AC visits check coils, refrigerant, electrical parts and drainage. Maintenance cannot prevent every breakdown.
Your home is your fortress. We protect your comfort.
