Question 1

How do I clean mold from my AC coils?

Accepted Answer

Cleaning mold from AC coils requires careful attention to safety and proper technique, as improper cleaning can spread spores or damage the coils. While minor surface cleaning can be done by homeowners, extensive mold growth typically requires professional remediation.

For light surface mold on accessible coils, start by turning off power to the unit at both the thermostat and electrical panel. Remove the access panel to expose the evaporator coil (usually above your furnace). Use a soft brush

Question 2

Should I oil my furnace blower motor?

Accepted Answer

Most modern furnace blower motors are permanently sealed and do not require oiling. Attempting to oil a sealed motor can actually damage it and void your warranty.

Older furnace models (typically 15+ years old) may have motors with oil ports - small caps or plugs labeled "oil" near the motor bearings. These require a few drops of non-detergent SAE 10 or 20 motor oil annually. However, never assume your motor needs oiling without confirming it has accessible oil ports.

Here's how to tell the di

Question 3

How do I check if my HRV is working properly?

Accepted Answer

Your HRV (Heat Recovery Ventilator) should run continuously or on a schedule to maintain proper indoor air quality. Start by checking if you can hear it running - there should be a gentle humming sound from the unit, typically located in your basement or utility room.

Visual and operational checks are the easiest way to assess your HRV's performance. Look at the unit itself - you should see indicator lights showing it's powered on, and if it has a digital display, check that it's showing normal

Question 4

When should I replace my humidifier pad?

Accepted Answer

Replace your humidifier pad every 1-2 months during heating season, or when it becomes hard, crusty, or discolored. A clogged pad reduces humidity output and can harbor bacteria or mold.

Signs it's time for replacement include visible mineral buildup (white crusty deposits), a hard texture instead of soft and flexible, dark discoloration, or reduced humidity levels in your home despite the humidifier running. If you notice musty odors coming from your HVAC system, the pad may be growing mold an

Question 5

What is a plenum and should I have it inspected?

Accepted Answer

A plenum is a large air chamber in your HVAC system that distributes conditioned air from your furnace or air handler to the various ducts throughout your home. Think of it as the main distribution hub - heated or cooled air enters the supply plenum, then gets directed through your ductwork to different rooms.

Most homes have two plenums: a supply plenum that distributes conditioned air from your furnace/AC unit, and a return plenum that collects air coming back to be reheated or recooled. Thes

Question 6

How often should I have my furnace serviced?

Accepted Answer

Your furnace should be serviced annually, ideally in early fall before the heating season begins. This timing ensures your system is ready for Ottawa's cold winters and helps prevent breakdowns when you need heat most.

Annual furnace maintenance is essential for several reasons. During a professional tune-up, a licensed technician will clean the heat exchanger, inspect the venting system, test safety controls, and check for carbon monoxide leaks. They'll also examine the blower motor, lubricate

Question 7

How do I stop musty smells from my vents in spring?

Accepted Answer

Musty smells from your vents in spring are typically caused by moisture buildup in your ductwork over the winter months, along with dust and debris that's been sitting stagnant. This is a common issue in Ottawa homes as we transition from heating season to milder weather.

The most effective solution is professional duct cleaning and sanitization. Over the winter, your ducts accumulate dust, pet dander, and moisture that can create ideal conditions for mold and mildew growth. When you first turn

Question 8

How do I keep my outdoor AC unit clean in fall?

Accepted Answer

Regular fall cleaning of your outdoor AC unit will help it last longer and run more efficiently when summer returns. Start by turning off power to the unit at both the outdoor disconnect switch and your home's electrical panel for safety.

Remove debris from around and inside the unit by clearing away leaves, twigs, and other organic matter that has accumulated over the summer. Use a garden hose to gently spray the condenser coils from the inside out - this removes dirt and debris that blocks ai

Question 9

What maintenance can I do myself on my HVAC?

Accepted Answer

You can safely perform several basic HVAC maintenance tasks yourself, but it's important to know where to draw the line for safety and warranty reasons.

The most important DIY maintenance task is changing your furnace filter regularly - typically every 1-3 months depending on the filter type and your home's conditions. A dirty filter restricts airflow, making your system work harder and potentially causing damage. You can also keep your outdoor AC unit or heat pump clean by gently hosing off de

Question 10

How do I know if my furnace needs a new ignitor?

Accepted Answer

A failing furnace ignitor typically shows clear warning signs before it completely fails. The most common symptoms include the furnace not starting consistently, clicking sounds without ignition, or the system cycling on and off repeatedly without producing heat.

The telltale signs of ignitor problems include hearing your furnace attempt to start (you'll hear the blower or clicking sounds) but no heat actually comes out of the vents. You might notice the furnace tries to light multiple times be

Question 11

Should I have my chimney cleaned if I have gas heat?

Accepted Answer

Yes, you should still have your chimney cleaned and inspected regularly, even with gas heat. Gas furnaces and fireplaces produce combustion byproducts that need proper venting, and chimneys can develop issues that affect safety and efficiency.

Gas appliances produce water vapor and carbon dioxide that must be safely vented outside. Over time, this moisture can cause corrosion in metal chimney liners, and debris like leaves, bird nests, or ice can block proper venting. A blocked or damaged chimn

Question 12

How do I test my carbon monoxide detector?

Accepted Answer

Most carbon monoxide detectors have a test button that you should press and hold for 2-3 seconds. You'll hear a loud beep or series of beeps if the detector is working properly. If there's no sound or a weak beep, replace the batteries immediately or replace the unit if it's hardwired.

Test your CO detector monthly to ensure it's functioning correctly. The test button only checks the alarm sound and electronics - it doesn't verify the actual carbon monoxide sensor. Look for a small button label

Question 13

How often should I have my AC serviced?

Accepted Answer

Air conditioning systems should be professionally serviced once per year, ideally in late spring before the cooling season begins. This annual maintenance helps ensure your AC runs efficiently, prevents breakdowns during hot summer days, and extends the system's lifespan.

Annual AC maintenance typically includes cleaning the evaporator and condenser coils, checking refrigerant levels, inspecting electrical connections, lubricating moving parts, and testing system performance. A clean system run

Question 14

What happens if I skip furnace maintenance?

Accepted Answer

Skipping furnace maintenance will lead to higher energy bills, more frequent breakdowns, and potentially dangerous safety issues. Your furnace will work harder to heat your home, components will wear out faster, and you risk carbon monoxide exposure from a dirty or malfunctioning system.

Energy efficiency drops significantly when your furnace isn't maintained. A dirty air filter alone can increase your heating costs by 15-20%, while a dirty heat exchanger or blower can push that even higher. In

Question 15

What MERV rating filter should I use

Accepted Answer

Most Ottawa homes should use MERV 8-11 filters, which provide excellent filtration without restricting airflow in your HVAC system. MERV 8 captures dust, pollen, and pet dander effectively, while MERV 11 also filters out smaller particles like smoke and smog.

MERV ratings explained: The scale runs from 1-16, with higher numbers capturing smaller particles. MERV 1-4 are basic fiberglass filters that barely filter anything. MERV 5-8 are pleated filters good for most homes. MERV 9-12 offer superio

Question 16

How much does HVAC maintenance cost

Accepted Answer

HVAC maintenance in Ottawa typically costs $150-$200 for an annual tune-up, which is a small investment that can prevent costly breakdowns and extend your system's lifespan.

What's included in professional HVAC maintenance varies by contractor, but a comprehensive service should include cleaning and inspecting your furnace or heat pump, checking gas connections and combustion, testing safety controls, changing filters, and verifying proper airflow. For air conditioning systems, maintenance incl

Question 17

How do I maintain my HVAC system between service calls

Accepted Answer

Regular maintenance between professional service calls can significantly extend your HVAC system's lifespan and improve efficiency. The most important tasks are simple enough for homeowners to handle safely, while others require professional attention.

Filter maintenance is your most critical task. Check your furnace filter monthly and replace it every 1-3 months depending on usage, pets, and air quality. A dirty filter restricts airflow, making your system work harder and potentially causing d

Question 18

What causes HVAC systems to fail prematurely

Accepted Answer

HVAC systems typically fail prematurely due to poor maintenance, improper installation, and neglecting air filter changes. The most common culprit is simply not changing filters regularly, which forces your system to work harder and can lead to expensive breakdowns.

Poor maintenance is the leading cause of premature HVAC failure. When homeowners skip annual tune-ups, small issues go undetected and turn into major problems. Dirty coils reduce efficiency, worn belts can snap unexpectedly, and low

Question 19

What is included in an HVAC tune-up

Accepted Answer

An HVAC tune-up includes a comprehensive inspection and cleaning of your heating and cooling system to ensure safe, efficient operation. Most tune-ups take 1-2 hours and should be performed annually before the heating season begins.

For furnaces, the technician will inspect and clean the heat exchanger, check gas connections for leaks, test the ignition system, and verify proper combustion. They'll examine the blower motor and fan, lubricate moving parts, and check electrical connections. The f

Question 20

Why is regular HVAC maintenance important

Accepted Answer

Regular HVAC maintenance is essential for safety, efficiency, and preventing costly breakdowns - it's like getting regular oil changes for your car, but even more critical since your HVAC system affects your family's comfort and safety year-round.

Safety is the top priority, especially in Ottawa where we rely heavily on gas furnaces through long winters. During annual maintenance, licensed technicians check for carbon monoxide leaks, inspect heat exchangers for cracks, and ensure proper venting

Question 21

When should I schedule furnace maintenance

Accepted Answer

Schedule furnace maintenance annually, ideally in early fall (September-October) before the heating season begins. This timing ensures your system is ready for Ottawa's cold winters and helps prevent breakdowns when you need heat most.

Annual maintenance is essential for keeping your furnace running safely and efficiently. During a professional tune-up, a licensed technician will clean components, check gas connections, test safety controls, inspect the heat exchanger for cracks, and ensure pro

Question 22

Should I get my ducts inspected

Accepted Answer

Yes, you should have your ducts inspected every 3-5 years, or sooner if you notice signs of problems. Most Ottawa homeowners overlook their ductwork, but it's a critical component that affects your energy bills, indoor air quality, and system efficiency.

Signs your ducts need inspection include uneven heating or cooling between rooms, higher than normal energy bills, excessive dust accumulation, musty odors when the system runs, or visible mold around vents. If you've recently renovated, had pe

Question 23

How do I prepare my AC for summer

Accepted Answer

Start preparing your AC for summer about 2-4 weeks before you'll need it regularly. This gives you time to address any issues before the hot weather hits and HVAC companies get swamped with emergency calls.

Begin with the basics that you can safely handle yourself. Replace your furnace filter with a fresh one - a dirty filter restricts airflow and makes your AC work harder. Clear any debris, leaves, or vegetation from around your outdoor unit, maintaining at least 2 feet of clearance on all sid

Question 24

How do I know if my HVAC technician did a good job

Accepted Answer

A good HVAC technician should leave clear signs of professional work, proper testing, and thorough documentation. You can evaluate their work quality through several key indicators that demonstrate both technical competence and professionalism.

Professional conduct and preparation are your first clues. A quality technician arrives on time with proper identification, explains the work needed, provides written estimates for major repairs, and uses appropriate tools and safety equipment. They shou

Question 25

What is a heat exchanger inspection

Accepted Answer

A heat exchanger inspection is a critical safety check where an HVAC technician examines the metal chamber inside your furnace that separates combustion gases from the air that circulates through your home. This inspection looks for cracks, corrosion, or other damage that could allow dangerous carbon monoxide to leak into your living space.

During the inspection, a licensed technician will visually examine the heat exchanger using specialized tools like borescopes or cameras to see inside the c

Question 26

Is an HVAC maintenance plan worth it

Accepted Answer

Yes, an HVAC maintenance plan is typically worth the investment - it saves money long-term, prevents emergency breakdowns, and keeps your family safe from carbon monoxide risks.

Annual maintenance costs around $150-200 in Ottawa, but prevents much larger repair bills. During a professional tune-up, technicians clean components, check gas connections, test safety controls, and catch small issues before they become expensive problems. A well-maintained furnace or heat pump lasts 15-20 years versu

Question 27

How often should I service my HVAC system

Accepted Answer

Your HVAC system should be serviced annually, ideally twice per year - once in spring for air conditioning and once in fall for heating equipment. This preventive maintenance schedule helps ensure optimal performance, energy efficiency, and safety throughout Ottawa's extreme seasonal temperature swings.

Annual furnace maintenance is particularly critical in Ontario because TSSA regulations require proper maintenance of gas-fired equipment for safety and warranty compliance. During a fall tune-u

Question 28

What should I do to prepare my furnace for winter

Accepted Answer

Start preparing your furnace for winter in early fall by replacing the air filter, checking your thermostat, and scheduling professional maintenance. This proactive approach helps ensure reliable heating when Ottawa's cold weather arrives and can prevent costly emergency repairs during peak season.

Filter replacement is the most important step you can take yourself. A dirty filter restricts airflow, making your furnace work harder and potentially causing it to overheat or cycle on and off frequ

Question 29

How do I improve my HVAC system efficiency

Accepted Answer

Improving your HVAC system efficiency starts with regular maintenance and addressing air leaks, which can reduce your energy bills by 10-30% while extending your equipment's lifespan.

The most impactful step is changing your furnace filter regularly - every 1-3 months depending on the type. A dirty filter forces your system to work harder, increasing energy consumption and potentially causing expensive repairs. Beyond filters, annual professional maintenance is crucial for peak efficiency. Duri

HVAC Maintenance