An engineer with a tablet checking an air conditioning unit

10 near you

Find hvac in Longmont

Confirm your location to see pros near you.

HVAC pros near you

10 hvac pros serving Longmont, CO. Compare experience, team size and the work they do, then contact them directly — Fixerlane never charges customers.

Top pros for your project

1. Douglas Chimney

Longmont, CO16 years in business3 employees

Douglas Chimney provides fireplace repair in Longmont, CO. A team of 3, the business has been operating for 16 years. A repair visit usually starts with an inspection of the firebox, damper, smoke chamber, and flue, and for gas units, the ignition system and controls. Once the problem is identified, the damaged parts are rebuilt or replaced and the unit is tested to confirm it draws properly and operates cleanly. On their profile, Douglas Chimney lists fireplace or chimney services needed: fireplace repair, chimney repair, chimney cleaning and fireplace cleaning; fireplace type: wood; fireplace material: brick, stone or concrete, metal, wood and plaster; building height: singe-level, two-story and three-story. Smoke entering the room, a damper that will not fully open or close, or cracked bricks inside the firebox are signs a fireplace needs repair before use. Note whether the fireplace is wood-burning, gas, or an insert, and include photos of the firebox, damper, glass doors, and any visible damage. Fireplace repair pricing depends on the type of unit, how extensive the masonry or component damage is, and whether parts are readily available. Besides Longmont, homeowners in Boulder, Berthoud and Mead can reach out for fireplace repair. Posted hours are Monday to Sunday, 12:00 am to 11:59 pm. Accepted payment methods include Cash, Check and Venmo. Request a quote from Douglas Chimney on Fixerlane and describe the job you need done.

2. Woelfel Heating & Air

Longmont, CO11 years in business2 employees

Woelfel Heating & Air provides central air conditioning repair in Longmont, CO. The business has been operating for 11 years with a team of 2. Diagnosis typically starts at the thermostat, moves to the indoor air handler and filter, and finishes at the outdoor condenser. Readings taken at each point help separate a simple fix, like a failed capacitor or clogged drain, from a larger problem such as a refrigerant leak or a compressor fault. Typical jobs for central air conditioning repair in Longmont include blower motor repair, clogged condensate drain line, thermostat troubleshooting, compressor diagnosis and short cycling problems. Warm air from the vents, an outdoor unit that hums without the fan turning, or ice forming on the refrigerant lines usually means the system needs repair soon. Mention where the indoor unit sits, whether in an attic, closet, garage, or basement, along with access limits like a pull-down ladder or locked side gate. AC repair cost is driven mainly by which part failed, whether refrigerant must be recovered or added, and how accessible the indoor and outdoor equipment is. Customers in Longmont and nearby areas such as Boulder, Berthoud and Mead can request a quote. Posted hours are Monday to Friday, 7:00 am to 6:00 pm. Accepted payment methods include Apple Pay, Cash, Check, Credit card, Google Pay and PayPal. To get started, send Woelfel Heating & Air a request on Fixerlane with the details of your project.

3. Flatirons Heating and Air

Longmont, CO4 years in business4 employees

Flatirons Heating and Air is a central air repair technician serving Longmont, CO. The business has been operating for 4 years with a team of 4. Diagnosis typically starts at the thermostat, moves to the indoor air handler and filter, and finishes at the outdoor condenser. Readings taken at each point help separate a simple fix, like a failed capacitor or clogged drain, from a larger problem such as a refrigerant leak or a compressor fault. Typical jobs for central air conditioning repair in Longmont include short cycling problems, refrigerant leak detection, noisy outdoor unit, condenser fan motor repair and AC not cooling diagnosis. Short cycling, rising humidity indoors, and water leaking near the furnace or air handler are common early signs that an air conditioning system has a problem. Describe exactly what the system is doing, such as blowing warm air or refusing to turn on, and note the thermostat setting and any displayed error codes. AC repair cost is driven mainly by which part failed, whether refrigerant must be recovered or added, and how accessible the indoor and outdoor equipment is. Customers in Longmont and nearby areas such as Boulder, Berthoud and Mead can request a quote. Accepted payment methods include Cash, Check and Credit card. To get started, send Flatirons Heating and Air a request on Fixerlane with the details of your project.

4. Umbrella Construction Corp

Longmont, CO3 years in business34 employees

Umbrella Construction Corp is a central air conditioning installation company serving Longmont, CO. A team of 34, the business has been operating for 3 years. Installing central air involves setting an outdoor condenser, matching an indoor evaporator coil or air handler, running refrigerant lines between them, and connecting power and a condensate drain. The system is then evacuated, charged, and tested for proper airflow and temperature split. Typical jobs for central air conditioning installation in Longmont include adding AC to a furnace system, smart thermostat setup with new AC, load calculations for system sizing, new central AC system installs and new refrigerant line sets. Rising summer power bills, uneven cooling between floors, and a condenser that is rusted or noisy are also signs it may be time for new equipment. Share the home's square footage, number of stories, age of the current system, and photos of the outdoor unit data plate and indoor furnace or air handler. Electrical upgrades, permits, crane or attic access for the air handler, and removal of old equipment can add to an installation quote. Besides Longmont, homeowners in Boulder, Berthoud and Mead can reach out for central air conditioning installation. Posted hours are Monday to Friday, 8:00 am to 4:00 pm. Request a quote from Umbrella Construction Corp on Fixerlane and describe the job you need done.

5. Husky Heating and Cooling LLC

Longmont, CO3 years in business6 employees

Husky Heating and Cooling LLC is a central air conditioning installation company serving Longmont, CO. A team of 6, the business has been operating for 3 years. An installation visit often starts with removing the old condenser and coil, recovering refrigerant, and preparing the pad. The crew then sets new equipment, brazes line connections, confirms the thermostat works, and walks the homeowner through filters and basic care. On their profile, Husky Heating and Cooling LLC lists work needed: install new a/c units, replace existing a/c units, remove old a/c units and install ducts and vents; system type: split system and packaged system; building height: single-level, two-story, three-story and high-rise; property type: house, condo or apartment, townhouse and business. Homes in Longmont without central air, or with window units in every room, often add a ducted system when there is existing ductwork from a furnace. Mention whether ductwork already exists, where it runs, and any rooms or floors that are noticeably too hot or too cold today. Electrical upgrades, permits, crane or attic access for the air handler, and removal of old equipment can add to an installation quote. Besides Longmont, homeowners in Boulder, Berthoud and Mead can reach out for central air conditioning installation. Posted hours are Monday to Sunday, 5:00 am to 9:00 pm. Request a quote from Husky Heating and Cooling LLC on Fixerlane and describe the job you need done.

6. DND Home Services

Longmont, CO3 years in business2 employees

DND Home Services provides central air conditioning repair in Longmont, CO. The business has been operating for 3 years with a team of 2. During hot stretches in Longmont, the most frequent repair calls involve iced-over coils, outdoor fans that will not spin, and water pooling near the indoor unit. Each symptom has several possible causes, and a repair visit narrows the list down with testing before any parts are ordered or replaced. Typical jobs for central air conditioning repair in Longmont include capacitor replacement, clogged condensate drain line, contactor replacement, condenser fan motor repair and compressor diagnosis. DND Home Services is also listed for duct and vent cleaning. Short cycling, rising humidity indoors, and water leaking near the furnace or air handler are common early signs that an air conditioning system has a problem. Describe exactly what the system is doing, such as blowing warm air or refusing to turn on, and note the thermostat setting and any displayed error codes. System age, part availability for the specific model, and whether the visit falls on evenings or weekends are the usual factors behind a repair quote. Customers in Longmont and nearby areas such as Boulder, Berthoud and Mead can request a quote. Posted hours are Tuesday to Saturday, 4:00 pm to 8:00 pm. To get started, send DND Home Services a request on Fixerlane with the details of your project.

7. Mechanical Diagnostics

Longmont, CO2 years in business2 employees

Based in Longmont, CO, Mechanical Diagnostics works as a furnace repair technician. The business has been operating for 2 years with a team of 2. Furnace repair begins with diagnosis. A technician checks the thermostat signal, reads any error codes on the control board, and watches the startup sequence to see where it fails. Common culprits include dirty flame sensors, failed ignitors, clogged filters, and faulty pressure switches, each of which has a specific fix. Typical jobs for furnace repair in Longmont include furnace not turning on, no heat calls, ignitor replacement, flame sensor cleaning and gas valve replacement. New noises like squealing, banging, or rattling, or a burning smell that lingers past the first run of the season, often signal a failing part. Describe exactly what happens when heat is called, such as clicking, no response, or cold air, and when the problem started. The failed component drives most of the cost, since a flame sensor cleaning is simple while a blower motor or control board involves more expensive parts. Customers in Longmont and nearby areas such as Boulder, Berthoud and Mead can request a quote. Posted hours are Monday to Friday, 8:00 am to 5:00 pm. Request a quote from Mechanical Diagnostics on Fixerlane and describe the job you need done.

8. Your Comfort Heating & Cooling

Longmont, CO2 years in business2 employees

Your Comfort Heating & Cooling provides furnace repair in Longmont, CO. A team of 2, the business has been operating for 2 years. A no-heat call in Longmont usually starts with questions about what the furnace is doing, such as clicking, blinking lights, or blowing cold air. After testing, the technician explains the cause and repair options. The visit ends with the system running through a full heating cycle to confirm the fix. Common requests for furnace repair include short cycling diagnosis, ignitor replacement, limit switch replacement, inducer motor replacement and clogged condensate line repair. Rooms that never reach the set temperature, or heating bills climbing without a change in use, can mean the furnace is struggling. Describe exactly what happens when heat is called, such as clicking, no response, or cold air, and when the problem started. Unit age, parts availability, difficult attic or crawlspace access, and calls outside regular business hours can all change the final repair price. Customers in Longmont and nearby areas such as Boulder, Berthoud and Mead can request a quote. Accepted payment methods include Apple Pay, Cash, Check, Credit card, Venmo and Zelle. Request a quote from Your Comfort Heating & Cooling on Fixerlane and describe the job you need done.

9. Lucas Boilers

Longmont, CO2 years in business

Lucas Boilers provides furnace installation in Longmont, CO. It has been in business for 2 years. Homeowners in Longmont replacing a furnace often compare efficiency levels, single-stage versus variable-speed options, and whether to replace the air conditioner at the same time for matched equipment. A replacement day usually ends with a walkthrough on filter changes, thermostat use, and where the shutoff switch is located. Common requests for furnace installation include furnace and AC system replacement, old furnace removal and disposal, electric furnace installation, furnace sizing and load calculation and gas furnace replacement. A furnace that is aging, needs frequent repairs, or requires an expensive part often leads homeowners to compare repair costs with a full replacement. Mention the fuel type available, preferred efficiency level, and whether the air conditioner or thermostat should be replaced at the same time. Venting changes, ductwork modifications, attic or tight-space installs, permit fees, and fuel conversions add labor and materials to the total. Customers in Longmont and nearby areas such as Boulder, Berthoud and Mead can request a quote. Accepted payment methods include Cash, Check, PayPal, Venmo and Zelle. Request a quote from Lucas Boilers on Fixerlane and describe the job you need done.

10. Nuwave Heating and Cooling Pros

Longmont, CO1 year in business3 employees

Nuwave Heating and Cooling Pros provides furnace installation in Longmont, CO. The business has been operating for 1 year with a team of 3. Furnace installation involves removing the old unit, setting the new one, and connecting gas, electrical, venting, and ductwork. High-efficiency models also need a condensate drain and often new plastic venting. Once installed, the system is started, gas pressure and temperature rise are checked, and the thermostat is set up. Common requests for furnace installation include electric furnace installation, return air upgrades, gas line connection for furnaces, attic furnace installation and venting and flue upgrades. Nuwave Heating and Cooling Pros is also listed for duct and vent cleaning and garbage disposal installation. Uneven heating between rooms, rising gas bills, or a system that runs constantly on cold days can mean the current unit no longer fits the home. Share the home's square footage, age, number of stories, and any rooms that are consistently too hot or too cold. Furnace efficiency, capacity, and blower type are the largest price factors, along with the brand and whether the air conditioner is replaced too. Besides Longmont, homeowners in Boulder, Berthoud and Mead can reach out for furnace installation. Posted hours are Monday to Saturday. Accepted payment methods include Cash, Check, Credit card and Zelle. Request a quote from Nuwave Heating and Cooling Pros on Fixerlane and describe the job you need done.

HVAC near Longmont

Westminster, CO (4 · 22.3 mi)Arvada, CO (3 · 25 mi)Brighton, CO (14 · 25.6 mi)Wheat Ridge, CO (3 · 27.9 mi)Denver, CO (51 · 28.7 mi)Golden, CO (4 · 31.1 mi)Fort Collins, CO (9 · 34.4 mi)Englewood, CO (16 · 37.6 mi)

Other services in Longmont

Landscaping & Lawn Care (31)Cleaning (29)Construction & Contracting (20)Handyman (15)Masonry & Concrete (15)Moving & Junk Removal (13)Roofing & Exterior (12)Painting (12)Electrical (9)Remodeling & Carpentry (9)Flooring (6)Plumbing (4)