As you already know, HVAC systems notoriously require careful installation and maintenance to ensure peak efficiency during their lifespan. What you may not realize is that many inefficiencies and other system errors are the result of common HVAC mistakes during installation, maintenance and/or incorrect operation.
To help keep your systems running smoothly and efficiently, be sure to avoid these HVAC mistakes while you’re on the job:
1. Improperly Sized AC Unit
One of the most common AC installation mistakes is choosing a wrongly-sized unit. Doing so can result in significant energy efficiency issues and other problems.
To help ensure you have the right sized system for the job, you can use BTU calculator to calculate the cooling needs of a home based on its dimensions. Then, find an air conditioner that’s designed to produce that number of BTUs.
2. Incorrectly Positioning the AC Unit
Installing an AC unit in a less than optimal spot can result in both energy efficiency and functionality issues with the system.
For reference, the unit should be in a relatively shaded area where it is scarcely exposed to direct sunlight. At the same time, you want to ensure plenty of clearance around the unit (typically at least 5 feet between the unit and any hedges, trees, or yard ornaments).
Improper clearance is another one of the ac installation mistakes that can cause the system to work harder and will therefore cost more energy – and money.
3. Incorrectly Positioning the Thermostat
Just like the unit itself, thermostats must also be positioned strategically. If they’re not put in the right positions, temperature inconsistencies can arise, and air conditioners can fail to perform their functions as needed.
First and foremost, keep the thermostat out of direct sunlight. Sunlight can trigger temperature inaccuracies, potentially leading to incorrect temperatures throughout the home. Similarly, windows and doors are problematic since wind drafts could trick the unit into thinking that it’s colder or warmer than it really is.
4. Improperly Insulating the Refrigerant Line
Refrigerant lines are generally exposed to the elements, and, therefore, must be properly insulated. Failing to do so is one of the HVAC installation mistakes that can result in energy efficiency issues and place undue strain on the unit.
To ensure that you’re insulating your lines properly, check this guide for more detailed specifications.
5. Failing to Check for Refrigerant Leaks
In addition to proper insulation, failing to check for refrigerant leakage is one the most common HVAC mistakes that harms the lifespan of a unit.
HVAC installation mistakes can often result from not taking the time to do a final check once the installation is complete. Small leaks and punctures can happen, so be sure to do a thorough inspection and ensure everything is sealed properly once you’re finished.
6. Wrongly Positioned Vents
If you’re installing a central AC system, you may also be installing a duct system. If so, that means you’re also installing vents, which must be positioned the right way.
This is one of the common HVAC mistakes that can be avoided with proper planning. Taking the time to ensure that a vent on the ground isn’t placed where you know furniture or other appliances will need to be, for example, is a great way to avoid these AC installation mistakes.
7. Missing or Blocked Air Returns
Air returns help air cycle through homes by routing air from the room back to the furnace-A/C blower to be warmed or cooled again and sent back out to the house. As such, any vent needs a clear path for the air to reach a return.
When designing a system, make sure that all rooms have free air flow to a return and that the returns are sized to provide adequate air flow back to the furnace and blower. Failing to do so can result in negative pressure, pulling air into the home from any possible opening, circumventing the HVAC system and possibly trapping exhaust from gas appliances inside.
One of the best ways to avoid these HVAC mistakes is to take your time, have a detailed plan in place and be thorough every step of the way.
Checking (and double-checking) may seem small, but when it comes to AC installation mistakes and other common HVAC mistakes, taking the time to do your due diligence can go a long way towards preventing system failure and other avoidable issues.
