Abacus is a Dave Lennox Premier Dealer in Houston, TX. 

Offering Lennox A/C and Heating Equipment Sales, Repair and Installation.

  • FREE In-Home Estimates
  • Up to 25 SEER
  • Energy Star® qualified
  • SilentComfort™ Technology

Abacus is an Independent Lennox Dealer in Houston

We provide repairs for any model A/C you may have, but we limit our sales to those that we’ve identified as best in class. Lennox exceeds our expectations in this case.

Watch the videos here and learn about Abacus as a Lennox Dealer. The video features Dave Lennox himself.

In the News: Abacus Plumbing & Air Conditioning Commits to Becoming a Dave Lennox Premier Dealer 

As Seen on Yahoo Finance


If you’re in the market for a new A/C, installed by Abacus’ staff of qualified technicians, fill out the form on the top right to request your FREE In-Home Estimate today. A Lennox Home Comfort System will keep your home cool and comfortable and your energy bills low. Innovative technology such a unique compressor system give you the most comfort while staying very energy efficient.

Lennox has placed emphasis on building AC’s that are environmentally safe, highly efficient and extremely quiet.

Abacus is an Independent Lennox Dealer in Houston


Air Conditioners


Dave Lennox Signature© Collection
XC25 Air Conditioner

Highest efficiency and quietest two-stage A/C.

Customer Ratings 5 Star Rating
Efficiency Rating (SEER) UP TO
Price Range $$$

Elite© Series XC20 Air Conditioner
Single-stage, high efficiency and low noise.

Customer Ratings 5 Star Rating
Efficiency Rating (SEER) UP TO
Price Range $$

Elite Series©
XC16 Air Conditioner

High-efficiency, two-stage A/C.

Customer Ratings 4 Star Rating
Efficiency Rating (SEER) UP TO
Price Range $$