Seasonal tune-up and full diagnostic on your Carrier, Trane, or Goodman system - readings shown to you before any repair is proposed
Diagnosis first, numbers second - you approve the repair price before a single part goes in.
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AfterFast, Reliable Furnace Repair Across Longwood
Most furnace repairs in Longwood run $150 – $700 and our Furnace Repair team can usually diagnose and fix the problem same-day when you call (984) 538-9003. We know Longwood’s neighborhoods from Sabal Point to the historic downtown district, and we dispatch from our Miami office with crews that live and work in Seminole County. When your heat goes out on a January night or your furnace starts short-cycling after a summer of disuse, you need someone who understands why Longwood’s humidity and 1970s-era duct systems create repair patterns you won’t see in drier inland cities.
Brandt comes from an old word for a firebrand. Keeping Longwood homes warm is literally what our name means. We answer the phone with a live person 24 hours a day, 7 days a week, and we send you your technician’s name, photo, and background-check verification before they arrive at your door.
Why Brandt HVAC Is Longwood’s Preferred Furnace Repair Company
We’ve built our reputation in Longwood on certainty, not surprises. Every technician is Threshold Verified: background-checked, identity-verified, and introduced to you by name and photo before the visit. If anyone shows up at your door who you weren’t told to expect, that visit is on us and we make it right.
Our 365-Day Done Right Promise covers every repair we make in Longwood. If the repair fails, we return at no charge. No argument. No additional fee. We also put every price in writing before any work starts, so you know exactly what you’re paying before we pick up a wrench.
Calls to (984) 538-9003 are answered by a live person, never a phone tree or voicemail queue. Nights, weekends, holidays. That’s especially important when a cold front drops temperatures fast and your furnace won’t fire.
We know the local conditions that break heating systems here. The northern-tier subdivisions near the Wekiva River basin run higher outdoor humidity than inland Seminole County communities like Lake Mary. That moisture finds its way into attics, crawlspaces, and unconditioned garages where furnaces sit, accelerating rust on heat exchangers and degrading electrical components. A technician who only knows Orlando’s drier climate will miss what we catch routinely in Longwood.
Heating Repair in Longwood
Heating Repair in Longwood covers everything from gas furnace ignition failures to heat pump defrost board replacements, and most jobs fall between $150 – $700 with parts and labor included. Because Longwood’s sustained cooling demand runs March through November, heating systems here often sit idle for eight or nine months. That long dormancy means dust accumulation, capacitor degradation, and unnoticed duct leaks from the previous cooling season all surface the first cold night you call for heat.
We service all major residential brands including Goodman, Rheem, and York, and we stock common ignitors, capacitors, and control boards for faster turnaround on Longwood calls.
Ignitor and Flame Sensor Service
Hot-surface ignitors crack from thermal cycling after years of seasonal use, and flame sensors coat with oxidation during Longwood’s humid off-season. We test both with a multimeter, clean or replace, and verify proper flame rectification before we leave. A failed ignitor on a January night is a no-heat emergency, and we carry the common Carrier, Trane, and Goodman replacements on our trucks.
Heat Exchanger Inspection and Replacement
We inspect every heat exchanger with a borescope camera during repair visits. In Longwood’s northern neighborhoods, we’ve found surface rust and insulation breakdown from damp attic air that rarely appears in drier Lake Mary systems of the same age. Cracked exchangers are a carbon monoxide risk. We shut the system down, explain exactly what we found, and give you a written replacement price with no pressure to decide on the spot.
Boiler Repair in Longwood
Boiler Repair in Longwood is less common than furnace work, but the older homes near the historic downtown district and certain 1960s – 70s builds still rely on hydronic heat, and most repairs run $150 – $700. These systems reward patience: a boiler that won’t fire often has a failed aquastat, a circulating pump with a seized bearing, or air-locked zones that need systematic bleeding. We don’t guess. We test water pressure, check expansion tank pre-charge, and verify pump amp draw before recommending any part replacement.
Longwood’s hard water, drawn from the Floridan Aquifer, accelerates scale buildup in boiler heat exchangers. Annual flushing extends life significantly. If your boiler is original to a 1970s home, we give honest guidance on repair versus replacement, with written prices for both paths.
Circulator Pump and Zone Valve Service
A single failed zone valve can leave one wing of your house cold while the boiler runs normally. We test 24-volt actuators, check for seized valve stems, and verify end-switch continuity. Replacement pumps are sized to your system’s head and flow requirements, not just swapped with whatever fits.
Pressure Relief and Expansion Tank Issues
Boilers that lose pressure repeatedly or discharge through the relief valve usually have a waterlogged expansion tank or a failing fill valve. We isolate, test, and replace only what’s actually failed. No blanket recommendations.
Trusted Brands We Service in Longwood
We repair Goodman, Rheem, York, Daikin, Carrier, Trane, Lennox, Bryant, and American Standard systems throughout Longwood. Our trucks carry the most common ignitors, capacitors, and control boards for these brands, and our Miami office maintains a parts network that gets less common components to Seminole County within 24 hours. For the 1970s – 1990s systems still running in Sabal Point and along SR 434, we source aftermarket and OEM parts when the manufacturer has discontinued a board or gas valve. We don’t tell you to replace a repairable system just because a part is hard to find.
Common Furnace Repair Problems We See in Longwood Homes
- Storm-fried control boards after Wekiva-area power surges. Lightning strikes and grid fluctuations during summer storms send voltage spikes through Longwood’s overhead lines. The furnace ignitor may test fine, but the control board is unresponsive. We test every component systematically, replace only what’s failed, and recommend surge protection for the future.
- Heat exchanger corrosion from northern-tier humidity. Furnaces in neighborhoods near the Wekiva River basin sit in damp environments that accelerate rust scaling and insulation breakdown. We catch this with borescope inspection, not guesswork, and we show you the image so you understand why replacement is necessary.
- Blower motor failure from 40-year-old flex-duct leakage. In Sabal Point and other 1970s – 80s subdivisions, original flex-duct collars separate in 140°F attics, dropping static pressure and forcing blower motors to draw high amps. The motor overheats and fails, or the furnace short-cycles on high-limit. We seal ducts with mastic before replacing motors, so the new part doesn’t fail the same way.
- Flooded outdoor heat pump units in low-lying Wekiva floodplain areas. After heavy rain or seasonal flooding, condensers and heat pumps sit in standing water. Attempting to restart without drying and testing the capacitor and compressor can destroy a system that was only waterlogged. We test, dry, and verify before re-energizing.
Pricing for Furnace Repair in Longace, FL
| Service | Price Range |
|---|---|
| Furnace repair diagnostic and common part replacement | $150 – $700 |
That range covers most of what we see in Longwood: ignitor replacements typically run $150 – $300, blower motor repairs $300 – $550, and control board replacements toward the higher end. Heat exchanger replacement, when needed, usually pushes toward or above $700 and we discuss whether repair still makes sense for the system’s age.
What moves a job up or down: accessibility (tight attic spaces in older homes add time), part availability (discontinued boards for 1980s systems), and whether we find duct leakage that’s forcing the component failure. We always give a written price before any work starts. Every job, no exceptions. Estimates are free. Call (984) 538-9003.
In Sabal Point, we responded to a no-heat call on a 1998 Carrier gas furnace; the heat exchanger showed rust scaling and the blower motor was drawing high amps because the original flex-duct collar had separated in the 140°F attic, dropping static pressure. We sealed the collar with mastic, replaced the blower capacitor, and verified furnace operation; the homeowner now has reliable heat without duct leakage wasting it.
We Also Serve Cities Near Longwood
Our Furnace Repair in Longwood crews also respond to heating calls in Lake Mary, Altamonte Springs, Casselberry, and Winter Springs. Dispatch and scheduling are coordinated from our Miami office, with technicians living and working locally in Seminole County for faster response.
Serving Longwood, FL - Our Local Coverage Area
We’re based in the Longwood area and know this community well. Use the map below to see our service coverage - if you’re nearby, we can almost certainly help.
FAQs About Furnace Repair in Longwood
No. Re-energizing a waterlogged outdoor unit without drying and electrical testing can destroy the compressor and capacitor. We test insulation resistance, dry components thoroughly, and verify amp draws before restart. If your unit sat in standing water after a Wekiva-area storm, call (984) 538-9003 before touching the breaker.
Short-cycling in Sabal Point usually means the blower motor is struggling against low static pressure from separated flex-duct collars in the attic, or the furnace is hitting high-limit because heat can’t move through the house. We measure static pressure, inspect ductwork with a camera, and seal leaks before replacing any parts. Call (984) 538-9003 for a free diagnostic.
Yes. Longwood’s northern-tier subdivisions near the Wekiva River basin experience consistently higher outdoor humidity than drier inland communities. That moisture accelerates rust on heat exchangers, degrades electrical connections in unconditioned spaces, and promotes microbial growth in air handlers. We see corrosion patterns here that rarely appear in Lake Mary systems of the same age.
Most furnace repairs in Longwood run $150 – $700, with ignitor replacements at the lower end and control board or blower motor work toward the middle and upper range. We put every price in writing before work starts, and estimates are free. Call (984) 538-9003 for your exact quote.
Install a dedicated surge protector at the outdoor disconnect and consider a whole-home surge device at the electrical panel. If you’re using a portable generator during an outage, never backfeed through a dryer outlet; use a proper transfer switch installed by a licensed electrician. Improper generator connection can fry control boards and create a fire hazard. We can recommend surge protection specific to your system configuration.
Ready to get your heat back? Call Brandt HVAC at (984) 538-9003 for a free estimate. We’ll send you your technician’s name, photo, and verification before they arrive, and you’ll see every price in writing before any work begins. That’s the Threshold Verified standard, and it’s how we’ve worked since 2003.
Written by Devin Marlowe, Owner at Brandt HVAC, serving Longwood and Seminole County.