Yes — Done installs whole-home air filtration systems on existing HVAC equipment, and this is one of the most popular indoor air quality upgrades we perform across the Denver metro. In most cases, your existing furnace and air handler can be upgraded with significantly better filtration without any changes to the core equipment. The result is cleaner air delivered through every vent in your home, automatically, every time your system runs.

What’s Involved in the Installation

Most whole-home filtration upgrades involve installing a media air cleaner cabinet or an electronic air cleaner in the return-air side of your HVAC system — typically adjacent to your air handler or furnace, where all the air in your home passes through before being conditioned and redistributed. The installation usually takes a few hours and doesn’t require replacing your existing equipment. Done’s technicians assess your current system configuration, measure the return air opening, and select a compatible unit that fits your duct layout.

If your current filter slot is a standard 1-inch bay, upgrading to a 4- or 5-inch media filter cabinet is one of the most impactful changes possible. These deep-pleated filters have dramatically more surface area than thin filters, which means they capture more particles, last longer between changes (typically 6–12 months versus monthly), and create less airflow restriction per unit of filtration efficiency.

Filtration Options Done Can Install

There’s no single “best” air filtration product — the right choice depends on what you’re trying to remove from your air and how your system is configured. Done offers and installs:

  • High-MERV media filter cabinets — Capture fine particles including dust mite debris, pet dander, mold spores, pollen, and wildfire smoke particulates. MERV 13 is the sweet spot for most homes: excellent filtration without excessive airflow restriction on properly sized equipment.
  • Electronic air cleaners — Use electrostatic charge to capture ultrafine particles that even high-MERV mechanical filters can miss. Require periodic cleaning of collection plates but have minimal airflow restriction.
  • UV-C germicidal light systems — Installed in the air handler or ductwork to neutralize biological contaminants: mold spores, bacteria, and viruses as they pass the lamp. Often paired with a media filter for comprehensive coverage.
  • Combination systems — Many homeowners choose a media filter for particulate capture plus a UV system for biological contaminants, addressing the two most common indoor air quality concerns with a single integrated approach.

Is Your Existing System Compatible?

The vast majority of central forced-air systems — gas furnaces, heat pumps, and air handlers with standard ductwork — are compatible with whole-home filtration upgrades. The main variable is the physical space available in your mechanical room or utility area adjacent to the air handler, and the size and configuration of your return air plenum. Done’s technicians handle this assessment during the installation appointment, so you don’t need to measure anything in advance.

One important note: upgrading to higher-efficiency filtration without confirming your system’s airflow capacity can cause problems. A MERV 16 filter on a system designed for MERV 8 can restrict airflow enough to reduce heating and cooling performance, freeze the evaporator coil, or strain the blower motor. Done will make sure the filtration upgrade is properly matched to your equipment’s actual capacity.

Why Whole-Home Filtration Beats Portable Purifiers

Portable air purifiers do work — in the room they’re in. But your home’s air circulates continuously through the HVAC system, meaning a whole-home system treats every cubic foot of air in every room every time the fan runs. A single properly sized whole-home filtration system typically moves more air through filtration media per hour than several portable units combined, without the noise, the floor space, or the hassle of maintaining multiple devices in multiple rooms.

For Colorado homeowners dealing with wildfire smoke season, high-altitude dust, pet dander, or seasonal allergies, this is particularly meaningful — when air quality events happen, your whole-home system is running continuously to address them, not just cleaning the air in one bedroom.

Ready to upgrade your home’s air quality? Visit our indoor air quality page to see the full range of solutions, or schedule an assessment with Done — we’ll evaluate your existing system and recommend the filtration upgrade that fits your home and your air quality goals.