Air Purification in Walnut Creek

Whole-Home IAQ Systems Installed by NATE-Certified Technicians

Since 1971, Connolly Heating & Air Conditioning has helped Walnut Creek homeowners breathe easier. As a Carrier® Factory Authorized Dealer with NATE-certified technicians, we install whole-home air purification systems that integrate directly with your existing HVAC system, treating the air in every room from a single installation point. We service all makes and models, and free estimates are available before any work begins.

Ready to improve the air quality in your home? Call us at (925) 281-3462 for a free estimate on air purification in Walnut Creek.

Why Walnut Creek Homeowners Think About Indoor Air Quality

Walnut Creek’s inland East Bay location brings real air quality challenges. Spring and summer pollen seasons are intense, wildfire smoke from Northern California fire corridors pushes fine particulates (PM2.5) into homes every warm season, and modern energy-efficient construction limits fresh-air exchange, allowing VOCs (volatile organic compounds), CO2, and odors to accumulate indoors. According to the U.S. Environmental Protection Agency, indoor air can carry concentrations of some pollutants 2 to 5 times higher than typical outdoor levels.

Standard one-inch furnace filters are designed to protect HVAC equipment, not to remove fine particles, gases, or biological contaminants at a level that meaningfully improves air quality. Pollen, mold spores, pet dander, dust, VOCs from cleaning products and furnishings, and combustion gases from gas appliances all require more targeted solutions than a basic filter provides.

Air Purification Systems We Install

We offer a full line of Carrier indoor air quality systems spanning mechanical filtration, UV germicidal treatment, and fresh-air ventilation. Each addresses a different category of contaminant, and many homes benefit from combining two or more.

Carrier Whole-Home Air Purifiers

The Carrier Infinity Air Purifier (DGAPA) uses Captures and Kills™ technology with a long-life MERV 15 filter that captures up to 95% of particles and kills or inactivates up to 99% of germs and viruses, including human influenza, common cold surrogate, and Streptococcus pyogenes. It carries a 10-year parts limited warranty. The Carrier Infinity Return Air Purifier (RGAP) delivers the same MERV 15 filtration with a germicidal rate of up to 99% and has demonstrated effectiveness against coronavirus and other pathogens.

For homes where whole-home filtration is the priority and the highest-tier system isn’t required, the Carrier Comfort Series Air Purifier (EZXCAB) uses a deep-pleated MERV 10 filter (MERV 13 available) that maintains airflow while filtering airborne allergens and particulates. The cabinet carries a 10-year parts limited warranty.

UV Germicidal Lamps

UV germicidal lamps (UVLCC2LP and UVLCC1LP) mount at the indoor coil, where mold and bacteria tend to accumulate. UV treatment targets biological contaminants that mechanical filters alone can’t neutralize, while also helping maintain airflow and system efficiency. Both models carry a 10-year limited warranty, with a 90-day warranty on the bulbs.

Energy Recovery Ventilators & Heat Recovery Ventilators

Tightly built homes need fresh-air exchange to dilute CO2, VOCs, and odors that neither filtration nor UV treatment can resolve. Carrier Energy Recovery Ventilators (ERVs) and Heat Recovery Ventilators (HRVs) bring outdoor air in while using the outgoing air’s thermal energy to pre-condition it, helping preserve the heating or cooling already in your home.

Why Walnut Creek Residents Choose Connolly Heating & Air Conditioning

Over 50 years of HVAC experience in Walnut Creek and Contra Costa County means our technicians have seen the full range of home systems and indoor air quality concerns in this area. Our NATE-certified team meets the highest technical standards in the HVAC industry, and our Carrier Factory Authorized Dealer status reflects rigorous vetting by Carrier for qualifications and customer service. We’re also BPI® certified, meeting national standards for home performance and energy efficiency.

Five-star reviewers consistently describe our technicians as helpful, knowledgeable, professional, prompt, and courteous. Every installation is backed by our satisfaction guarantee, and flexible financing options are available for homeowners who want to move forward without budget uncertainty.

What to Expect During Installation

We start with an assessment of your existing HVAC system and ductwork to identify which contaminants are the primary concern and which combination of mechanical filtration, UV treatment, or ventilation best fits your home. Because we service all makes and models, your current system brand isn’t a limiting factor.

Whole-home air purifiers are typically installed in-line with the return duct or air handler, making them compatible with most ducted systems. After installation, our technicians verify system performance and walk you through filter replacement schedules and maintenance requirements so you know exactly what to expect going forward.