# Moon Air

> Official website for Moon Air.

Use the links below to find authoritative information published by this website.

## Key Pages

- [Home](https://moonairinc.com/)
- [HVAC](https://moonairinc.com/hvac/)
- [Air Conditioning](https://moonairinc.com/cooling/)
- [AC Repair](https://moonairinc.com/cooling/air-conditioning-repair/)
- [AC Replacement](https://moonairinc.com/cooling/air-conditioning-replacement/)
- [Amana](https://moonairinc.com/amana/)
- [Daikin Ductless Mini Splits](https://moonairinc.com/daikin-mini-split-systems/)
- [AC Maintenance](https://moonairinc.com/cooling/air-conditioning-maintenance/)
- [Heating](https://moonairinc.com/heating/)
- [Furnace Repair](https://moonairinc.com/heating/heater-repair/)
- [Furnace Replacement](https://moonairinc.com/heating/heater-replacement/)
- [Heating Maintenance](https://moonairinc.com/heating/heater-maintenance/)
- [Oil to Gas Conversions](https://moonairinc.com/oil-to-gas-conversions/)
- [Indoor Air Quality](https://moonairinc.com/indoor-air-quality/)
- [Air Purifiers](https://moonairinc.com/air-purifiers/)
- [Air Filters](https://moonairinc.com/air-filters/)
- [Air Cleaners](https://moonairinc.com/air-cleaners/)
- [Duct Cleaning & Sanitizing](https://moonairinc.com/duct-cleaning-sanitizing/)
- [Duct Sealing](https://moonairinc.com/duct-sealing/)
- [Whole-Home Humidifier](https://moonairinc.com/whole-home-humidifier/)
- [Whole-Home Dehumidifier](https://moonairinc.com/whole-home-dehumidifier/)
- [Maintenance Plans](https://moonairinc.com/maintenance-plans/)
- [Service Area](https://moonairinc.com/service-area/)
- [Chesapeake City, MD](https://moonairinc.com/service-area/hvac-contractor-chesapeake-city-md/)
- [Chestertown, MD](https://moonairinc.com/service-area/hvac-contractor-chestertown-md/)
- [Church Hill, MD](https://moonairinc.com/service-area/hvac-contractor-church-hill-md/)
- [Earleville, MD](https://moonairinc.com/service-area/hvac-contractor-earleville-md/)
- [Elkton, MD](https://moonairinc.com/service-area/hvac-contractor-elkton-md/)
- [Havre de Grace, MD](https://moonairinc.com/service-area/hvac-contractor-havre-de-grace-md/)
- [North East, MD](https://moonairinc.com/service-area/hvac-contractor-north-east-md/)
- [Perryville, MD](https://moonairinc.com/service-area/hvac-contractor-perryville-md/)
- [Rising Sun, MD](https://moonairinc.com/service-area/hvac-contractor-rising-sun-md/)
- [Rock Hall, MD](https://moonairinc.com/service-area/hvac-contractor-rock-hall-md/)
- [Chadds Ford, PA](https://moonairinc.com/service-area/hvac-contractor-chadds-ford-pa/)
- [Landenberg, PA](https://moonairinc.com/service-area/hvac-contractor-landenberg-pa/)
- [Lebanon, PA](https://moonairinc.com/service-area/hvac-contractor-lebanon-pa/)
- [Lincoln University, PA](https://moonairinc.com/service-area/hvac-contractor-lincoln-university-pa/)
- [Oxford, PA](https://moonairinc.com/service-area/hvac-contractor-oxford-pa/)
- [Peach Bottom, PA](https://moonairinc.com/service-area/hvac-contractor-peach-bottom-pa/)
- [West Chester, PA](https://moonairinc.com/service-area/hvac-contractor-west-chester-pa/)
- [West Grove, PA](https://moonairinc.com/service-area/hvac-contractor-west-grove-pa/)
- [West Nottingham, PA](https://moonairinc.com/service-area/hvac-contractor-west-nottingham-township-pa/)
- [Bear, DE](https://moonairinc.com/service-area/hvac-contractor-bear-de/)
- [Claymont, DE](https://moonairinc.com/service-area/hvac-contractor-claymont-de/)
- [Glasgow, DE](https://moonairinc.com/service-area/hvac-contractor-glasgow-de/)
- [Greenville, DE](https://moonairinc.com/service-area/hvac-contractor-greenville-de/)
- [Hockessin, DE](https://moonairinc.com/service-area/hvac-contractor-hockessin-de/)
- [Middletown, DE](https://moonairinc.com/service-area/hvac-contractor-middletown-de/)
- [New Castle, DE](https://moonairinc.com/service-area/hvac-contractor-new-castle-de/)
- [Newark, DE](https://moonairinc.com/service-area/hvac-contractor-newark-de/)
- [Smyrna, DE](https://moonairinc.com/service-area/hvac-contractor-smyrna-de/)
- [Townsend, DE](https://moonairinc.com/service-area/hvac-contractor-townsend-de/)
- [Wilmington, DE](https://moonairinc.com/service-area/hvac-contractor-wilmington-de/)
- [Shop Filters](https://moonairinc.com/shop-filters/)
- [About](https://moonairinc.com/about-us/)
- [Specials](https://moonairinc.com/offers/)
- [Careers](https://moonairinc.com/careers/)
- [Awards](https://moonairinc.com/awards/)
- [FAQs](https://moonairinc.com/faqs/)
- [Blog](https://moonairinc.com/hvac-blog/)
- [Contact Us](https://moonairinc.com/contact-us/)

## Resources

- [XML Sitemap](https://moonairinc.com/sitemap_index.xml): Machine-readable index of published content.

## Optional

- [Best Time to Replace Your HVAC System](https://moonairinc.com/best-time-to-replace-your-hvac-system/): When Should You Replace Your HVAC Unit? A Tri-State Homeowers Guide The best time to replace an aging HVAC system in the Tri-State (MD, PA, DE) area is early spring (March to early May) or early fall (mid-September to early November). These are the Tri-State’s shoulder seasons. During this time period if your home needs […]
- [Fall Heating System Checklist](https://moonairinc.com/fall-heating-system-checklist/): A Tri-State (MD, PA, DE) Fall Heating Checklist As the sticky summer humidity finally breaks across Maryland, Delaware, and Pennsylvania, it’s tempting to just open the windows and forget about your HVAC system. But before the autumn leaves start falling in earnest, it’s time to give your home a quick comfort check. Many homeowners wait […]
- [Why Your Furnace Short Cycles](https://moonairinc.com/how-your-furnace-decides-to-heat/): What Happens When Your Furnace Short-Cycles and Shuts Down To understand why your furnace is shutting down or stops working properly, it helps to look at what happens behind the cabinet door during a normal startup. Modern furnaces follow a strict 6-step checklist every single time your thermostat asks for heat. If any step fails, […]
- [Heat Pump Blowing Cold Air in Winter](https://moonairinc.com/heat-pump-blowing-cold-air-in-winter/): Why Is My Heat Pump Blowing Cold Air in the Winter? A heat pump blowing cold air in winter is often normal. The most common reasons are a defrost cycle, which lasts 5–15 minutes, or supply air of about 85–100°F that feels cool against your skin. If cold air lasts longer than 15 minutes, check […]
- [Is It Time to Switch From AC to Heat? Here’s How I Decide (And How You Should Too)](https://moonairinc.com/is-it-time-to-switch-from-ac-to-heat-heres-how-i-decide-and-how-you-should-too/): Every September, I get some version of the same question from customers: “So… when do I actually switch over?” I get it. Nobody wants to flip on the heat too early and waste money, but nobody wants to wake up shivering because they waited too long, either. After 40 years running Moon Air and crawling […]
- [How Often Do I Really Need to Service My HVAC System?](https://moonairinc.com/how-often-do-i-really-need-to-service-my-hvac-system/): The Short Answer: Twice a Year with One Exception For the vast majority of homeowners in the Tri-State MD, PA, and DE area, the golden rule is twice a year: Spring (March/April): AC or Heat Pump cooling tune-up before the summer heat hits. Fall (September/October): Furnace or Heat Pump heating tune-up before the first freezing […]
- [Why HVAC Smells Like Dirty Socks](https://moonairinc.com/why-hvac-smells-like-dirty-socks/): Why Your AC Smells Like Dirty Socks When It First Turns On You walk past a vent, the air kicks on, and for about a minute your living room smells like a gym bag. Then it’s gone. You are not imagining it, you are not the only one, and it is almost never a sign […]
- [Why a Bigger HVAC System Isn’t Always Better](https://moonairinc.com/why-a-bigger-hvac-system-isnt-always-better/): How to Tell if Your HVAC System Quote is Too Big For Your Tri-State Area Home At Moon Air, we’ve been servicing, repairing, and installing HVAC systems across Maryland, Delaware, and Pennsylvania since 1985. We’ve seen firsthand how rule-of-thumb heating and cooling sizing backfires. We’ll show you what it costs you in Elkton, Newark, Oxford, […]
- [How Humidity Impacts Your Central AC System](https://moonairinc.com/how-humidity-impacts-your-central-ac-system/): A Tri-State Homeowner’s Guide to the Moisture Problem Behind Most Summer Comfort Complaints You set the thermostat to 72. The thermostat says 72. And your house still feels like the inside of a gym bag. If you’ve lived through a July in Elkton, Newark, Wilmington, West Chester, or anywhere along the Route 40 corridor, you […]
- [Is It Better to Leave AC Unit On All Day or Turn It Off?](https://moonairinc.com/is-it-better-to-leave-ac-unit-on-all-day-or-turn-it-off/): Should I Turn My AC Unit Off When Leaving My Tri-State (MD, PA, DE) Area Home? Every July and August, homeowners in the Tri-State area, across Maryland, Pennsylvania, and Delaware face the same morning dilemma before heading to work: Should you leave your air conditioner running while the house is empty, or shut it off […]