Humidifier Repairs
Fast, Reliable Humidifier Repairs by Markham Heating & Air Conditioning
When your humidifier stops working, dry winter air quickly returns, bringing dry skin, irritated sinuses, static shocks, and stress on your wood floors and furniture. Our certified technicians respond quickly to diagnose and repair all major whole-home humidifier brands. At Markham Heating & Air Conditioning, we fix the root cause so your home stays comfortable and healthy all winter.
Humidifier Repair Services
Let Markham Heating & Air Conditioning Restore Balanced, Healthy Air to Your Home Quickly
Quick Dry-Air Relief
Our technicians arrive quickly with the tools and parts needed to fix most humidifier problems in one visit, restoring comfortable humidity fast.
Leak & Fault Troubleshooting
We diagnose leaks, clogs, low humidity output, and humidistat issues using manufacturer-approved procedures to find and fix the real problem.
Straightforward Local Service
As a reliable local company, we provide honest assessments, transparent pricing, and lasting repairs you can depend on, with no hidden fees.
Call us, or send us an email for a free estimate
Our Repair Promise
We take pride in delivering fast, honest, and stress-free humidifier repairs from start to finish. Our technicians explain the problem clearly, give you an upfront quote before any work begins, and make sure your system runs safely and reliably before we leave.
Transparent Upfront Quotes
We explain the problem and give you a clear quote before any work begins, so there are no surprises or hidden fees on your bill.
Reliable Replacement Parts
We repair and replace solenoid valves, water panels, humidistats, and drain lines using OEM-approved parts whenever available.
Water Flow & Drain Testing
After every repair, we test water flow, drainage, and humidity output to confirm your humidifier runs safely and reliably.
Clean Work & Helpful Advice
We leave your home clean, walk you through the repair, and give honest advice on whether future repair or replacement makes more sense.
Our Brands
At Markham Heating & Air Conditioning we trust Aprilaire home humidifiers to
introduce moisture back into our client’s homes.
Aprilaire
Whole-Home Humidifiers, Dehumidifiers & Air Purifiers
General Aire
Full Line of Efficient, Effective & Reliable Indoor Air Quality Products
Is Your Humidifier Not Working? Check These Items First
Before calling a technician, a few quick checks may save you the cost of a service call.
- Is your humidistat set correctly? Make sure it’s set to a level above your home’s current humidity — typically 35-45% in winter. If it’s set too low, the unit won’t run.
- Is the water supply on? Check that the saddle valve or water supply line feeding the humidifier is open. It can occasionally get bumped closed.
- Is the furnace running? Most whole-home humidifiers only operate when the furnace blower is running. If the furnace isn’t calling for heat, the humidifier may not run even if it’s working correctly.
- When was the water panel last replaced? A clogged or mineral-encrusted water panel is the most common cause of reduced humidifier output. Most manufacturers recommend replacing it once per season.
- Is there a visible water leak? Check the drain line and connections for drips or pooling water. A blocked drain or loose fitting is often the cause.
If you’ve worked through this list and your humidifier still isn’t operating properly, give us a call. Markham Heating and Air Conditioning is ready to help — we service all major brands.
Humidifier Maintenance & Tune-Up
Annual humidifier maintenance keeps your unit operating at peak performance and prevents mineral buildup, leaks, and reduced output. Regular servicing extends equipment life and ensures your home maintains healthy humidity levels all winter long.
When you book a tune-up with Markham Heating and Air Conditioning, a fully licensed technician will inspect and service your humidifier thoroughly. We service all major humidifier brands including Aprilaire and GeneralAire.
Here are a few items covered in our inspection:
| Inspection Item | Why It Matters |
|---|---|
| Humidistat calibration & operation | Confirms the humidistat is reading correctly and triggering the unit at the right humidity level |
| Water panel inspection | Checks for mineral buildup, damage, or blockage — replaced if needed |
| Water supply line & flow check | Verifies adequate water supply and correct flow rate through the distribution tray |
| Drain line inspection | Checks for blockages, kinks, or buildup that can cause leaks or standing water |
| Solenoid valve operation | Confirms the water valve opens and closes correctly on demand |
| Cabinet & internal components | Inspects housing, distribution tray, and internal parts for corrosion or damage |
| Overall output verification | Confirms the unit is adding adequate moisture relative to its rated capacity |
A full written report of our findings is available on request after every tune-up, so you always know exactly where your humidifier stands.
Why it matters
Regular tune-ups help catch worn parts before they fail, keep your system running efficiently, and protect against safety risks. Staying current with annual maintenance can also be a requirement for keeping your equipment warranty valid.
Ready to book your humidifier tune-up?