Cleaner Water Throughout Your Home

Water filtration services including testing, treatment solutions and reverse osmosis installation in Boulder, Colorado.

When your tap water in Boulder tastes metallic, leaves white residue on fixtures, or smells faintly of chlorine, those are signs that minerals, sediment or chemicals are present at levels that affect daily use. DNI Heating and Air provides water quality testing and installs customized filtration systems to address the specific contaminants found in your water supply.


Water filtration removes impurities such as chlorine, lead, sediment, bacteria and dissolved minerals that cause hardness or discoloration. DNI Heating and Air offers water quality testing to determine your water quality and to come up with a customized treatment solution for your water. Reverse osmosis systems are an advanced form of water filtration and purification that they install for homes and businesses that want the highest level of contaminant removal at the point of use.


If you want to improve the taste, clarity or safety of your water in Boulder, get in touch with DNI Heating and Air to schedule testing and discuss filtration options.

Testing Your Water and Choosing the Right System

DNI Heating and Air starts with a water quality test at your Boulder property, collecting samples and analyzing them for hardness, pH, chlorine, lead, bacteria and other contaminants. The results determine which filtration method or combination of methods will address your specific water issues. Whole-house filters treat water at the point of entry, while reverse osmosis systems are installed under the sink for drinking and cooking water.


After installation, you will notice that water tastes cleaner, appliances develop less scale buildup, and soap lathers more easily in sinks and showers. Reverse osmosis systems remove up to ninety-nine percent of dissolved solids, including heavy metals and salts, producing water that is noticeably clearer and free of odors. Drinking water no longer has the chemical taste that sometimes comes from municipal treatment processes.


DNI Heating and Air services both residential and commercial customers, providing filter replacements, membrane changes and system adjustments as part of ongoing maintenance. Filtration systems require periodic component replacement depending on water usage and contaminant levels, and DNI Heating and Air tracks service intervals to keep the system functioning as intended. The next section answers common questions about water treatment and system upkeep.

Water filter system installed under a sink. Three white cylindrical filters are connected to plumbing pipes.

Answers to Questions About Water Quality

Homeowners and business owners in Boulder often want to know what contaminants are in their water, how filtration affects taste and appliance performance, and what maintenance is required after installation.

What does a water quality test measure?

DNI Heating and Air tests for hardness, pH, chlorine, lead, bacteria, nitrates and other contaminants that affect water safety and usability. The results guide the choice of filtration system and treatment components.

How does a reverse osmosis system work?

Reverse osmosis pushes water through a semi-permeable membrane that blocks dissolved solids, heavy metals, salts and other impurities. The filtered water is stored in a small tank under the sink and delivered through a dedicated faucet.

When should I replace the filters in my water filtration system?

Most pre-filters and carbon filters need replacement every six to twelve months depending on water usage and contaminant levels. Reverse osmosis membranes typically last two to three years before DNI Heating and Air replaces them during a maintenance visit in Boulder.

Will a water filtration system remove the metallic taste from my tap water?

Yes, carbon filters and reverse osmosis membranes remove chlorine, iron and other minerals that cause metallic or chemical tastes. You will notice the difference immediately after the system is installed.

What is the difference between a whole-house filter and a reverse osmosis system?

A whole-house filter treats all water entering your home, reducing sediment, chlorine and hardness. A reverse osmosis system is installed at a single tap and provides advanced purification for drinking and cooking water.

DNI Heating and Air works with residential and commercial customers in Boulder who need reliable water filtration, whether that means a reverse osmosis system for a kitchen sink or a whole-house solution for better water throughout the property. Contact DNI Heating and Air to schedule water quality testing and review treatment options.