On New Installations Contact AC & Heating Company

Proudly Serving Glendora, Azusa, West Covina & The San Gabriel Valley Since 1982

Dedicated to Maximizing Your Indoor Comfort & Energy Efficiency

Family Owned & Operated Affordable Experienced Honest

Commercial HVAC Contractor, Serving Glendora, Azusa, Covina &
the Surrounding Area

Commercial AC & Heating Service
  • Serving the San Gabriel Valley Since 1982
  • 1,000s of Satisfied Customers
  • NATE-Certified HVAC Technicians
  • Fully Licensed & Insured
  • Free Estimates on New Installations

Expert Heating & Air Conditioning Services at Affordable Rates for San Gabriel Valley Businesses

At NES Mechanical, we understand how important it is for your business to have a reliable, high functioning heating and air conditioning system. Not only is your HVAC system important to your consumers, but it also plays a major role in employee productivity. By working with NES Mechanical, you can rest easier knowing that you are working with qualified experts who specialize in the installation, maintenance, and repair of commercial HVAC equipment and are dedicated to fast response times, complete customer satisfaction, and lasting results.

Give NES Mechanical a call for high-quality commercial heating and air conditioning services at a fair and affordable price. We're knowledgeable in the repair and maintenance of all major HVAC brands, and offer convenient appointments for repairs, free on-site estimates for new installations, and cost-effective Service Agreements. All work is backed by a written warranty, and we offer a 100% customer satisfaction guarantee on all new Carrier installations for one full year.

We Repair All Major Brands!

Carrier Bryant York Goodman Amana Frigidaire Trane And More!

Commercial Furnace & Air Conditioner Repairs & Service in Glendora, Azusa, Covina, West Covina, La Puente, & Surrounding Areas

NES Mechanical's NATE-certified technicians are experts in commercial furnace and air conditioner repair. They have an average of more than 10 years of experience, receive ongoing training, and are thoroughly knowledgeable on the best methods for diagnosing and fixing nearly any heating and cooling issue. We service all major HVAC brands, including Carrier, Bryant, Goodman, Amana, York, Trane, and Frigidaire, and stand behind all our work with a written guarantee. Because we keep our trucks well stocked with the most commonly needed replacement parts, we're able to complete the majority of HVAC repairs on the first visit. Call today for high-quality, affordable furnace and AC repair in Azusa, Glendora, Covina, La Puente, West Covina, Baldwin Park, or other nearby city.

Commercial HVAC Maintenance: Annual Service Agreements & Tune-Ups

We offer heating and air conditioning tune-ups and service agreements for commercial customers throughout the San Gabriel Valley. Regular tune-ups help to keep your comfort system running smoothly and efficiently throughout the year, protects your investment, and helps catch potential problems early -- all of which are critically important to minimizing downtime and keeping heating and cooling costs to a minimum. With a commercial service agreement, you'll get two or four HVAC tune-ups per year, priority service, and 10% discounts on repairs. Call today for more details.

Commercial Heating & Air Conditioning Sales, Installation & Replacement Services

NES Mechanical sells, installs, and replaces commercial split air conditioner and furnaces (up to 20 tons) and heat pumps/packaged systems, from small to large rooftop units, manufactured by Carrier, the world's leader in heating and air conditioning innovation. These high-performance, energy efficient heating and cooling systems are ideal for retail stores, strip malls, and light industrial applications throughout the San Gabriel Valley. We have more than 34 years of experience in commercial HVAC sales and installation. If you are interested in installing or replacing a commercial HVAC system in Glendora, Azusa, Covina, West Covina, La Puente, Baldwin Park, or other nearby city, give us a call today to arrange a free on-site consultation. By having one of our qualified technicians come out and do a thorough assessment, you'll be sure to get the Carrier system that is ideal for your heating and cooling needs and your budget. All Carrier installations are done to code and backed by a 100% satisfaction guarantee for one year.

Ductless Mini-Splits for Commercial Server Rooms, Media Rooms & Meeting/Conference Rooms

Ductless mini-splits systems are an excellent option for improving temperature control in server rooms, media rooms, conference rooms, and other rooms that tend to run particularly warm or cold. These systems are highly energy efficient and often Energy Star qualified. They are discreet, economical, quiet, and very effective at heating and cooling small and large spaces. If you are interested in mini-split sales and installation for your San Gabriel Valley business, give NES Mechanical a call today.

Full-Service Commercial Heating & Air Conditioning, Including Ductwork Installation & Repair, Sheet Metal Fabrication, Thermostat Replacement, & More

NES Mechanical can be your one call for all your commercial heating and air conditioning needs. In addition to HVAC sales, installation, repair, and maintenance, we also offer a wide array of related services to meet nearly any need, such as energy efficiency upgrades, ductwork installation, ductwork repair, sheet metal fabrication, ductwork insulation, thermostat replacement, air filtration system installation, and more. Call today to speak with one of our commercial HVAC service experts about how we can help improve your indoor comfort.

14-Point Performance Air Conditioner Tune-Up

  • Clean condenser coil
  • Inspect evaporator coil if accessible
  • Inspect condensate drain
  • Inspect blower motor
  • Inspect filtration system
  • Adjust blower components
  • Lubricate moving parts as required
  • Inspect for refrigerant leaks
  • Test condensate pump
  • Tighten electrical connections
  • Test starting capabilities
  • Measure air temperature differential
  • Monitor refrigerant pressure
  • Measure amperage and voltage

14-Point Performance Furnace Tune-Up

  • Test for carbon monoxide leaks
  • Clean burner assembly
  • Inspect ignition assembly
  • Inspect blower motor
  • Inspect filtration system
  • Adjust blower components
  • Lubricate moving parts as required
  • Test and adjust safety controls
  • Tighten electrical connections
  • Calibrate thermostat
  • Check flue draft
  • Check combustion
  • Inspect vent piping
  • Inspect humidification system
Carrier HVAC Dealer IHACI Member NATE Certified HVAC Technician Hero Registered Contractor
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" This is business that really cares about the customer. They were honest, professional, and helpful in every step of the process. We could not repair the old system (more than 30 years old), so they gave us options, and let us choose what was best for us . . .

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