# Perfect Service Heating & Air > Official website for Perfect Service Heating & Air. Use the links below to find authoritative information published by this website. ## Key Pages - [Home](https://www.perfecthvac.com/) - [Services](https://www.perfecthvac.com/services/) - [HVAC Services](https://www.perfecthvac.com/hvac-services/) - [AC Installation & Replacement](https://www.perfecthvac.com/hvac-services/ac-installation/) - [AC Repair](https://www.perfecthvac.com/hvac-services/ac-repair/) - [AC Maintenance](https://www.perfecthvac.com/hvac-services/ac-maintenance/) - [HVAC Repair](https://www.perfecthvac.com/hvac-repair/) - [HVAC Maintenance](https://www.perfecthvac.com/heating-cooling-service-plans/) - [HVAC Installation in Birmingham & Trussville, AL](https://www.perfecthvac.com/hvac-installation/) - [Generator Installation](https://www.perfecthvac.com/whole-home-generators/) - [Blown-In Insulation](https://www.perfecthvac.com/blown-in-insulation/) - [Moisture Control](https://www.perfecthvac.com/moisture-control/) - [Crawl Space Encapsulation](https://www.perfecthvac.com/crawl-space-encapsulation/) - [Basement Dehumidifiers](https://www.perfecthvac.com/basement-dehumidifiers/) - [Vapor Barriers](https://www.perfecthvac.com/crawlspace-moisture-barriers/) - [Indoor Air Quality](https://www.perfecthvac.com/indoor-air-quality/) - [Air Duct Cleaning Service](https://www.perfecthvac.com/air-duct-cleaning/) - [Home Disinfectant](https://www.perfecthvac.com/home-disinfectant/) - [Water Treatment](https://www.perfecthvac.com/water-treatment-solutions/) - [Water Heaters](https://www.perfecthvac.com/water-heaters/) - [Products](https://www.perfecthvac.com/products/) - [Air Conditioners](https://www.perfecthvac.com/products/air-conditioners/) - [Heat Pumps](https://www.perfecthvac.com/products/heat-pumps/) - [Gas Furnaces](https://www.perfecthvac.com/products/gas-furnaces/) - [Whole Home Air Purifiers](https://www.perfecthvac.com/products/whole-house-air-purifier/) - [Service Areas](https://www.perfecthvac.com/service-areas/) - [Birmingham](https://www.perfecthvac.com/service-areas/birmingham-al-hvac-company/) - [Huntsville](https://www.perfecthvac.com/service-areas/huntsville-al-hvac-company/) - [Trussville](https://www.perfecthvac.com/service-areas/trussville-al-hvac-company/) - [Irondale](https://www.perfecthvac.com/service-areas/irondale-al-hvac-company/) - [Calera](https://www.perfecthvac.com/service-areas/calera-al-hvac-company/) - [Gadsden](https://www.perfecthvac.com/service-areas/gadsden-al-hvac-company/) - [About Us](https://www.perfecthvac.com/about-us/) - [We ❤ Local](https://www.perfecthvac.com/we-love-local/) - [Meet the Team](https://www.perfecthvac.com/about-us/team/) - [Employment](https://www.perfecthvac.com/about-us/employment/) - [Awards](https://www.perfecthvac.com/about-us/awards/) - [Autism Society of Alabama](https://www.perfecthvac.com/about-us/autism-society-of-alabama/) - [Blog](https://www.perfecthvac.com/blog/) - [Specials](https://www.perfecthvac.com/specials/) - [Enter Free HVAC System Giveaway](https://www.perfecthvac.com/neighbors-in-need-giveaway/) - [Refer A Friend](https://www.perfecthvac.com/refer-a-friend/) - [Financing](https://www.perfecthvac.com/financing/) - [Contact Us](https://www.perfecthvac.com/contact-us/) - [Connect With Us](https://www.perfecthvac.com/connect-with-us/) ## Resources - [XML Sitemap](https://www.perfecthvac.com/sitemap_index.xml): Machine-readable index of published content. ## Optional - [Does Closing Vents in Unused Rooms Actually Save Money?](https://www.perfecthvac.com/does-closing-vents-in-unused-rooms-actually-save-money/): It seems like common sense: if you’re not using a room, why cool or heat it? A lot of homeowners close the vents in spare bedrooms or rarely used spaces expecting to save money. Unfortunately, the science doesn’t back this one up — and it can actually work against you. Why It Doesn’t Work the […] - [AC Won’t Turn On At All? Basic Troubleshooting Before You Call](https://www.perfecthvac.com/ac-wont-turn-on-at-all-basic-troubleshooting-before-you-call/): Nothing is more frustrating than an AC that doesn’t respond at all — no hum, no airflow, nothing. Before assuming the worst, there are a few quick checks worth running through first. (If your system is actually running but just blowing warm air or not cooling the house, that points to a different set of […] - [Gas vs. Electric Furnace: Which Is Right for Your Alabama Home?](https://www.perfecthvac.com/gas-vs-electric-furnace-which-is-right-for-your-alabama-home/): When homeowners are choosing a furnace, gas versus electric is one of the first forks in the road. Both heat a home well when properly installed, but they work differently, cost differently to run, and fit different situations. Here’s the honest breakdown. How Each One Works A gas furnace burns natural gas or propane in […] - [Carbon Monoxide and Your Gas Furnace: What Every Alabama Homeowner Should Know](https://www.perfecthvac.com/carbon-monoxide-and-your-gas-furnace-what-every-alabama-homeowner-should-know/): Of everything we talk about with homeowners, this is the one we take most seriously. A gas furnace is a safe, efficient way to heat your home when it’s working properly — but a furnace that isn’t maintained can, in rare cases, produce carbon monoxide. Because you can’t see it or smell it, understanding the […] - [Repair or Replace Your Old Ductwork? An Honest Look for Alabama Homeowners](https://www.perfecthvac.com/repair-or-replace-your-old-ductwork-an-honest-look-for-alabama-homeowners/): Ductwork is the part of your comfort system nobody thinks about — it’s hidden in attics and crawlspaces, quietly carrying your heated and cooled air to every room. But ducts don’t last forever, and when yours are aging or damaged, you’ll eventually face a decision: patch what you’ve got, or replace it? We get this […] - [The Perfect Protection Plan: Why Your New HVAC Comes with Built-In Peace of Mind](https://www.perfecthvac.com/the-perfect-protection-plan-why-your-new-hvac-comes-with-built-in-peace-of-mind/): The Bottom Line: At Perfect Service, we operate on a principle of radical honesty. We’ve been vocal about our 24-Month Rule—the reality that a professionally installed, brand-new HVAC system shouldn’t need technical tinkering or costly maintenance plans during its first couple of years. However, major manufacturers still demand an annual paper trail to keep your […] - [Why Does My AC Turn On and Off Every Few Minutes?](https://www.perfecthvac.com/why-does-my-ac-turn-on-and-off-every-few-minutes/): If your air conditioner is kicking on, running for just a couple of minutes, then shutting off — over and over — that’s called short cycling, and it’s more than just annoying. It wastes energy, stresses the equipment, and usually means your home isn’t getting properly cooled or dehumidified. Here’s what’s behind it. Why Short […] - [Do You Need Crawlspace Drainage or a Sump Pump?](https://www.perfecthvac.com/do-you-need-crawlspace-drainage-or-a-sump-pump/): Not every crawlspace moisture problem is about humidity in the air — sometimes water is actually getting in, whether from groundwater, poor grading around the foundation, or heavy Alabama rain. When that’s what’s happening, sealing the space alone isn’t enough. You need somewhere for that water to go. Here’s how to know if that’s your […] - [Why Does My AC Freeze Up in the Summer? (And What to Do About It)](https://www.perfecthvac.com/why-does-my-ac-freeze-up-in-the-summer-and-what-to-do-about-it/): It’s one of the strangest calls we get: it’s 95 degrees outside, the Alabama sun is blazing, and the homeowner is staring at a block of ice on their air conditioner. How can anything freeze in this heat? But a frozen AC is surprisingly common in summer, and once you understand why it happens, both […] - [Sealed vs. Vented Crawlspace: Which Is Right Under Your Alabama Home?](https://www.perfecthvac.com/sealed-vs-vented-crawlspace-which-is-right-under-your-alabama-home/): Which Crawlspace is Right For You? The space under your house doesn’t get much thought until something goes wrong down there. But how that crawlspace is set up — vented and open to the outside, or sealed off from it — has a real effect on your air quality, your energy bills, and the long-term […]