Serving the GTA and nearby Ontario info@kelvinmechanical.ca +1 905-407-7353

Air and water quality

Air Filtration, Humidity and Water Treatment for Ontario Homes

Kelvin Mechanical installs and services whole-home air purification, UV lights, humidifiers, water softeners and reverse osmosis systems in Ontario homes. This page helps you match the equipment to the problem you actually have.

Whole-home HEPA air cleaner cabinet installed in the duct system

In pictures

What this work looks like

HEPA air cleaner cabinetKelvin job photo
HEPA air cleaner cabinetWhole-home air cleaner on the ductwork
Reverse osmosis systemKelvin job photo
Reverse osmosis systemUnder-sink filtration and tank
Whole-home humidifier on a furnaceKelvin job photo
Whole-home humidifier on a furnaceFlexible bypass duct, water line and drain tube

Photos from Kelvin Mechanical jobs in the GTA and nearby Ontario.

Match the equipment to the problem

Air and water products solve different problems, and no single product fixes everything. Describe what you notice, and we work back to the equipment.

What a first air or water quality visit looks like

We look at the equipment and the space it will live in before suggesting anything. Water testing is part of the planning for a softener or reverse osmosis system, and a duct and furnace check is part of the planning for air products. A quote follows a site review.

  • Air side: furnace or air handler model, filter slot, duct access and space for a return or supply connection
  • Humidifier planning: water connection, drain connection, humidistat location and furnace compatibility
  • Water side: hardness and incoming water results, the main shut-off, a drain, a power outlet and a bypass valve location
  • Existing equipment: filters, UV lamps, salt, membranes and maintenance history
  • Realistic expectations for each product, with no exact performance figures unless the equipment rating supports them

How these products work together, and where they stop

Filter terms vary a lot. True HEPA, HEPA-style, bypass HEPA, MERV media and electrostatic filters are different things, and we name which type a product is. We make no health or medical claims for air purification.

On the water side, a softener protects the whole house from hardness, while reverse osmosis polishes drinking water at one tap. They are often paired, and each needs regular maintenance to keep working as intended.

  • A humidifier and a purifier can share one furnace, but airflow and filter space have to allow for both
  • UV lights work alongside, not instead of, regular filter changes
  • A softener installed ahead of an RO system helps protect its membrane
  • Annual service keeps filters, lamps, pads and media doing their job

Help centre

Common questions

Do I need a softener, reverse osmosis or both?

A softener treats hardness for the whole house, while reverse osmosis refines drinking water at one tap. Many homes pair them. A water test shows what is in your supply, and performance depends on the incoming water and the equipment. See water softener installation and reverse osmosis installation.

What is the difference between true HEPA, HEPA-style and MERV filters?

True HEPA means a filter that meets a defined test standard, and most home duct systems need a bypass arrangement to use one. HEPA-style and bypass HEPA are different designs that may not meet that standard. MERV media and electrostatic filters are rated differently again, so we tell you which type a product is before you decide.

Will air purification help with allergies or health concerns?

We do not make health or medical claims. Filtration can reduce airborne particles that reach the filter, and a UV light can help reduce microbial growth on treated surfaces and support cleaner HVAC airflow. Results depend on your system, airflow and home, and we go over realistic expectations at the visit.

Why is the air in my house so dry in winter?

Cold outdoor air holds very little moisture, and heating it indoors makes it feel drier still. Dry air can bring static shocks, scratchy throats and shrinking wood. A whole-home humidifier on the furnace adds moisture in a controlled way, and the setting should come down as outdoor temperatures fall. See humidifier installation.

Can a whole-home humidifier cause mould?

Only when humidity is set too high for the weather or water is left standing. Condensation on windows is the early sign that the setting is too high. A correctly set unit with a clean pad and a working drain is far less likely to cause trouble. We set it conservatively and show you how to adjust it.

What is the difference between a water softener and a water filter?

A softener reduces hardness minerals using ion exchange. A filter catches particles or improves taste and odour, for example with carbon, and does not soften water. Some homes need one, some need both. A water test tells us which problem you actually have. See water softener installation.

Is the tap water hard in Ontario?

It varies by municipality and by supply. Municipal water differs from private well water, and hardness can change between neighbouring areas. Many municipalities publish water quality information, but a test of your own tap is the reliable answer. We start every softener or reverse osmosis plan with testing.

How often should a furnace filter be changed?

It depends on the filter type, how long the system runs, pets, renovations and the season. A thin disposable filter needs checking more often than a deep media filter. Read the label, look at the filter monthly in heavy-use months and change it when it is dirty. See air purifier service.

Can I add a humidifier, an air purifier and a UV light to the same furnace?

Often yes, but the plenum space, filter cabinet and blower capacity have to allow for all three. We plan them together so one product does not choke the airflow another needs. A site review shows what fits. Start with whole-home air purification.

What is the difference between a room air purifier and a whole-home system?

Portable room units clean one room. We do not offer them. We install ducted equipment that treats the air passing through your furnace or air handler, which works while the fan runs. It does not replace ventilation or cleaning. If you want a portable unit, a retailer is the place to go.

Should I test my well water before choosing treatment equipment?

Yes. Test first, then choose equipment. Your local public health unit can explain how to test a private well for bacteria. A softener or reverse osmosis system treats hardness and dissolved substances and does not replace dealing with a bacteria result. We use your results to plan treatment.

Quote and booking

Book an air or water visit

Share a few details and we will follow up. A written quote comes after a site review. There is no online checkout.

  • City and service type help us route your request
  • Urgency and property details let us prepare properly
  • Optional equipment photos speed up repairs and replacements

Prefer to talk? +1 905-407-7353

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