Lange Mechanical
About Lange Mechanical
Lange Mechanical provides professional hvac services in Houston, TX. Specializing in commercial HVAC maintenance and repair services, ensuring HVAC systems operate smoothly through seasonal inspections and part replacements. Our HVAC technicians service and repair all major brands including Carrier, Lennox, Trane, Rheem, and Goodman. We handle AC repair, furnace repair, heat pump service, ductwork installation, thermostat replacement, and complete system installations. Regular maintenance extends equipment life by 5-10 years and prevents expensive emergency breakdowns. We offer annual maintenance agreements that include priority scheduling, discounted repairs, and seasonal tune-ups. Serving the Houston metro area and surrounding Texas communities. Licensed and insured. Free estimates within 48 hours. We understand the unique demands that Texas heat, severe weather, and expansive clay soils place on homes and businesses in this region.
14 years in business
Services
AC Repair
FeaturedDiagnose and repair cooling issues including compressor, capacitor, fan motor, and refrigerant leaks.
Starting at $200 / per repair
AC Tune-Up
FeaturedComplete AC maintenance including filter replacement, coil cleaning, refrigerant check, and thermostat calibration.
Starting at $100 / per visit
Duct Cleaning
Professional air duct cleaning for improved air quality. Includes supply, return, and dryer vent cleaning.
Starting at $400 / per home
Furnace Repair
Diagnose and repair heating system issues including igniter, blower motor, heat exchanger, and thermostat.
Starting at $150 / per repair
New System Installation
Full HVAC system replacement including air handler, condenser, ductwork inspection, and thermostat. Includes permits.
Starting at $5800 / per system
Location
Not specified
Houston, TX 77002
Typical Hvac Costs in Houston
$200–$800
Costs vary based on project scope, materials, and complexity. Get a free quote from Lange Mechanical to compare pricing in Houston.
Hours of Operation
Services Offered
AC Repair
Diagnose and repair cooling issues including compressor, capacitor, fan motor, and refrigerant leaks.
$200
starting at
AC Tune-Up
Complete AC maintenance including filter replacement, coil cleaning, refrigerant check, and thermostat calibration.
$100
starting at
Duct Cleaning
Professional air duct cleaning for improved air quality. Includes supply, return, and dryer vent cleaning.
$400
starting at
Furnace Repair
Diagnose and repair heating system issues including igniter, blower motor, heat exchanger, and thermostat.
$150
starting at
New System Installation
Full HVAC system replacement including air handler, condenser, ductwork inspection, and thermostat. Includes permits.
$5,800
starting at
Reviews
4.8
10 reviews
10 reviews
Alex V.
Unit was not cooling properly. Tech found a refrigerant leak, repaired it, and recharged the system. Back to working perfectly. Reasonable pricing for HVAC service in the area. (Houston)
Response from Lange Mechanical
Thank you for choosing us! We appreciate the feedback and look forward to serving you again.
Brenda N.
Upgraded to a smart thermostat and had them check our whole system while they were here. Tech was knowledgeable and patient explaining the new features. Great HVAC service. (Houston)
Response from Lange Mechanical
What a wonderful review! We are honored to have earned your loyalty and look forward to serving you for years to come.
Joe D.
Had a ductless mini split installed in our garage conversion. Quiet, efficient, and the install was clean. Great option recommended by this HVAC company. (Houston)
Response from Lange Mechanical
Wow, thank you! Our team will be so happy to read this. Reviews like yours make it all worthwhile.
Derek O.
Used Lange Mechanical and was very satisfied with the hvac work. A friend recommended them and I can see why. Clean work, fair pricing, and they explained everything before starting.
7 people found this helpful
Response from Lange Mechanical
We really appreciate this review! Our hvac team in Houston works hard to deliver quality results. Thanks for your trust.
Sharon T.
Used them for years and they never disappoint. Latest service was AC refrigerant top-off and condenser cleaning. Always thorough and fairly priced HVAC service nearby. (Houston)
Response from Lange Mechanical
Thank you so much for the kind words! We take pride in our work and it means a lot when customers notice.
Daniel J.
Used them for heating repair. Professional from the first call to the finished job.
14 people found this helpful
Response from Lange Mechanical
Thank you for choosing us for your hvac needs in Houston! We appreciate the kind words and look forward to helping you again.
Wayne H.
They maintain the HVAC systems for our office building. Always responsive and thorough. Downtime is minimal and their preventive maintenance keeps everything running smoothly. (Houston)
Response from Lange Mechanical
Thank you for choosing us! We appreciate the feedback and look forward to serving you again.
Bill M.
Replacing an attic AC unit is not easy but their crew handled it like pros. New unit fits perfectly and the attic is sealed back up tight. Professional HVAC work. (Houston)
Response from Lange Mechanical
We really appreciate you taking the time to leave this review. Your satisfaction is our top priority!
Pete E.
Installed a UV light in our HVAC system and a better filter. Noticed less dust and allergies have improved. Knowledgeable HVAC tech who cared about air quality. (Houston)
Response from Lange Mechanical
We appreciate the review! Always looking to improve and your input helps.
Sandra C.
Replaced both our AC and furnace. The crew was professional, covered the floors, and finished in one day. New system runs so quietly we forget it is on. Best HVAC near us. (Houston)
Response from Lange Mechanical
Thank you for choosing us! We appreciate the feedback and look forward to serving you again.
Service Area
Serves Houston and surrounding areas
Frequently Asked Questions
Last updated April 2026
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