Many Denver residents have yet to store their winter gear. With daytime temperatures in the 40s and nighttime temps dropping into the 30s, most people still wear coats and hats.
Don’t let the cooling trend catch you off guard.
You’re still turning up the heat for now. In a few weeks, you’ll set your thermostat to COOL and enjoy the comfort of your AC. What will you do if you turn your air conditioner on and discover trouble?
By reading this ultimate guide to DIY Denver AC repairs, you can avoid feeling the heat. We’ve included helpful tips to help restore coolness when the AC breaks down.
Understanding the cost of air conditioning in Denver can also help you budget for necessary repairs and maintenance. It’s important to factor in seasonal fluctuations that may impact your expenses.
Additionally, investing in energy-efficient systems can minimize long-term costs and improve your home’s comfort.
When planning a new unit, prepare a detailed cost breakdown for the ductless AC installation to understand all potential expenses. This will help you make informed decisions when selecting the right model and installation service, ensuring that your investment aligns with your budget.
Furthermore, considering potential rebates for energy-efficient systems can enhance your savings, making it a smart move both financially and environmentally.
Read through the guide now and save yourself a little sweat later.
Table of Contents
Do You Have the Right Tools for the Job?
Long before the AC breaks down, you should plan for future repairs. You might be thinking budget, but we’re talking about tools here.
Planning for an HVAC emergency means ensuring you have the essential tools needed for DIY air conditioner repairs.
If you’re not sure whether what you have right now in your toolbox is adequate, here’s a list of the basics you’ll want on hand:
- Adjustable wrench
- Cordless drill
- Insulated screwdriver
- Needle-nose pliers
- Nut driver
- Socket/ratchet set
- Multimeter
- Voltage tester
In addition to the multimeter and voltage tester, most homeowners already have the tools on this list. If not, who doesn’t enjoy a trip to the hardware store?
AC Anatomy 101
You can have the best-stocked toolbox in town, but it won’t matter what’s inside the box if you know nothing about a central air conditioner.
You don’t need to go back to school to learn about your cooling system. Take some time one evening after work and get to know your AC.
To shorten the learning curve, here’s what every AC system has under the hood (or behind the panels):
Condensing Unit
The outdoor condensing unit sits right outside your house. Inside the condensing unit, you’ll find the following components: AC contactor, start/run capacitor, condenser coil, and the condenser fan motor and fan blades.
A DIYer can replace these parts without too much fuss.
The compressor also sits inside the condensing unit. Unfortunately, if your compressor goes out, there’s no DIY fix. You’ll need to contact your air conditioner repair specialist.
Evaporator Coil(or A-Coil)
In most AC units, the A-coil sits on top of the furnace. Once you locate the A-coil on the heating system unit, you’ll see how it got its name.
From a DIY perspective, if anything goes seriously wrong with the evaporator coil, you likely will not be able to fix it yourself.
You should also see a disconnect box close by the outside AC unit. Since you must cut the power to the AC before you work on it, it’s a good idea to locate the disconnect box.
Now that you know what’s inside the box, we’ll look at the most common AC repairs DIYers tackle.
Your AC Will Not Turn On
After several months of not using the AC, you might have a few surprises when the weather warms up enough to turn it on.
If the AC doesn’t kick on when it should, try these air conditioner troubleshooting tactics:
- Check for power on
- A tripped circuit breaker or blown fuse
- Thermostat set to COOL
Every HVAC repair technician has at least one story about answering a call to fix a broken AC only to discover the homeowner forgot to switch the thermostat from HEAT to COOL.
Sometimes the wiring inside your thermostat loosens. That’s an easy fix. Carefully pull the thermostat cover off and check for loose wires.
While the cover is removed, check the batteries and quickly remove any debris from inside the thermostat unit.
If you still can’t get the system to turn on, you may have a faulty thermostat. Most people can troubleshoot the thermostat without getting stressed, but it’s time to call your service technician if you’re at the end of your comfort level.
What to Do When You Don’t Feel Cool Air
Other than the air conditioner not turning on, there’s nothing quite as irritating as the system that turns on and then blows warm air. If this happens, the first step is to ensure there is no obstruction to airflow.
Dirty air filters are among the most common causes of airflow issues.
If you haven’t replaced the filter, do that first. Then, check the registers. Furniture and boxes in front of your registers can quickly stop airflow.
Don’t forget to check the condenser unit outside. Yard dirt and debris in and around the outdoor unit can interfere with airflow.
Check out the specifics on how to clean the condenser below.
Cleaning a Dusty Condenser
Cleaning the outside AC unit is usually part of routine maintenance. If it’s been a while since you took care of maintenance, there’s no better time to get it done than now.
You’ll want to follow these two precautions before starting the project: always turn off the power, and don’t use a pressure washer.
Remove any yard debris from around the condenser unit. Trim grass and shrubs if they’re blocking airflow.
When evaluating efficient cooling solutions for Denver homes, it’s essential to assess your home’s insulation and ventilation.
Properly managing these elements can significantly enhance your cooling system’s performance.
Additionally, investing in energy-efficient appliances will not only lower your utility bills but also create a more comfortable living environment.
One important factor to consider when evaluating minisplit installation costs in Denver is the local climate, which can affect both the system selection and installation costs.
Homeowners should also research various contractors to ensure they receive competitive pricing and quality service. By doing so, you can maximize your investment and improve your home’s overall comfort.
Next, remove the top cover and protective grilles. Clean the fins with a soft-bristled brush, then vacuum them with a brush attachment. The fins are delicate; please do not bend or damage them.
If you cover the motor and wiring with plastic, you can use a garden hose to spray away any remaining dust and debris from the fins.
Tip: Check your owner’s manual. If it calls for lubricating the motor, you can do so after cleaning the condenser.
For the DIYer who doesn’t enjoy the messier jobs, an HVAC service contractor can always lubricate the motor during routine service.
One More Component to Troubleshoot When You Have No Air
We covered the initial steps you can take to troubleshoot when the AC doesn’t turn on.
If you’ve confirmed power, checked for a tripped circuit or a blown fuse at the fuse box, and set the thermostat but still don’t have air coming through the vents, you may have a fan motor issue.
When you think about what the fan motor does, it’s no wonder it’s one of the most often-repaired or replaced parts.
The fan motor pumps air through the ductwork and out through the vents during the cooling cycle. When the fan motor fails, air no longer circulates through your home.
The fan motor takes a lot of wear and tear, so it makes sense to assume trouble when air isn’t flowing.
A savvy DIYer can troubleshoot a fan motor issue.
However, it’s best to call a qualified HVAC technician to repair or replace the motor.
Do You Have a Clogged AC Drain Line?
The plumbing isn’t the only system in your home that can develop clogs. The central air conditioning system can become clogged if the AC drain line is dirty.
Condensation from the evaporator coils combines with dust particles and pet dander. Then, you have mud. Mud washes into the AC drain line and eventually clogs it.
How do you know you have a clogged drain line?
Check the humidity level in your home. Excessive humidity could indicate a clogged AC drain line.
Because your HVAC system maintains a safe, healthy humidity level, you shouldn’t ignore this issue. If you do, you risk costly mechanical problems.
A clogged AC drain line can cause the air conditioner to shut down completely.
You can check for a clog and clean the lines if you feel comfortable. Otherwise, your HVAC tech should do this as part of your routine air conditioning maintenance.
DIY AC Noise Troubleshooting
A healthy HVAC system runs quietly in the background. Other than the typical sounds made when it kicks on and shuts down, you’ve probably learned to block out most of the noise.
When things go wrong, you’ll often notice the noise first.
For example, a constant clicking noise could indicate a thermostat’s failure.
Replacing a thermostat is one of the most straightforward DIY air conditioning repairs.
If you discover a faulty thermostat, consider replacing it with a new Smart thermostat to maintain the ideal temperature in your home.
HVAC systems can also emit squealing sounds when belts are out of alignment. Belts also experience normal wear and tear and require replacement. You can likely adjust or replace the belts yourself.
What about grinding noises? You may have an issue with your AC motor bearings.
Other noises your system might make include:
- Pinging and popping (loose metal)
- Rattling (a loose cover panel)
- Banging (a loose part inside the compressor)
You can likely fix loose metal in your ductwork or tighten a loose cover panel.
Banging from a loose or broken part inside the compressor usually means your HVAC technician will need to come out and replace the compressor.
If your AC emits screeching or whistling, turn off the power and call for service. You either have a refrigerant leak or a high internal pressure issue in the compressor. Both pose safety issues!
Have Questions about DIY AC Repairs?
While this guide covers some of the most common issues homeowners encounter in AC troubleshooting and repairs, it can’t cover everything you need to know.
To ensure your system operates efficiently, it’s essential to familiarize yourself with Westminster HVAC maintenance best practices.
Regular check-ups, filter changes, and system cleanings can significantly extend the lifespan of your equipment.
Additionally, staying ahead of potential issues will save you time and money in the long run.
AC maintenance tips for Denver homeowners emphasize the importance of seasonal inspections and timely repairs to address minor problems before they escalate.
Ensuring your unit is free from debris and that ducts are properly sealed can enhance efficiency and improve air quality.
By following these guidelines, you not only maintain comfort but also reduce energy consumption and lower your utility bills.
Here at JD’s Plumbing Heating and Air Conditioning, we’re always happy to answer your HVAC system questions.
If you’re tackling DIY AC repairs and can’t figure things out, let one of our experts help.
Contact our team today to schedule an HVAC service appointment.
