Central AC Replacement in Germantown, Gaithersburg and Rockville
Maryland summers are humid, and a worn-out air conditioner shows it. Longer run times. Rooms that never quite cool. Damp air the system cannot dry out anymore. Mora Heating & Air replaces central air conditioning systems in Rockville, Gaithersburg, Germantown, Montgomery Village, North Potomac, Potomac and Olney. We replace systems the right way. Indoor and outdoor gear that match. Honest sizing. And a check that it hits its rating.
A replacement is also a decision point. You can install a new air conditioner, or you can step up to a heat pump that cools identically in summer and heats through most of the winter. We will price both paths so you can compare them directly. We put the whole quote in writing before anything is ordered.
When Is It Time to Replace Your Air Conditioner?
No single symptom decides it, but a pattern does. These are the signals that an air conditioner is closer to the end than the middle of its life. In Olney and Derwood, where whole streets went up over the same few years, they tend to show up on several houses at once.
Age past fifteen years
Most central air conditioners in this climate serve twelve to eighteen cooling seasons. Past that point it costs more to run. Big parts start failing more often each summer.
R-22 refrigerant
If your system was installed before roughly 2010, it may run R-22, which is no longer produced in the United States. Any repair that needs refrigerant is a strong case for replacing it instead.
Repeated repairs
A second or third significant repair on an aging system is usually money spent propping up equipment that will fail again. We will tell you honestly when you have crossed that line.
Poor humidity and uneven cooling
A system that no longer wrings moisture out of the air, or leaves the upstairs warm while the main level is cold, is often both aged and incorrectly sized. Replacement is the chance to fix the sizing, not just the equipment.
What a Complete AC Replacement Includes
Replacing an air conditioner correctly means more than setting a new box outside. The outdoor unit and the indoor coil have to be replaced together as a matched pair. Mix an old coil with a new unit and you quietly lose the output and the savings you paid for. The lines get flushed or replaced. We pull the new system down to a checked vacuum. The charge is set by reading, not by guess.
We check the disconnect, the breaker size, and the drain. Then we measure what the finished system actually puts out and how much air it moves. You get those numbers in writing, because a system that was never verified was never really finished.
What Do SEER2 Ratings Actually Mean?
SEER2 is the current federal rating for cooling equipment. It is measured under test conditions closer to a real install than the old SEER number was. A higher SEER2 number means the system produces the same cooling using less electricity. Every new system sold in Maryland has to meet the federal minimum. Go above it and the extra pays you back in running costs over the years you own it.
The right rating depends on how long you plan to stay. It depends on how much you run the system. And it depends on whether the better gear earns a rebate. We lay out the realistic tradeoffs between tiers rather than defaulting you to either the minimum or the most elaborate option.
Should You Replace Your AC With a Heat Pump?
Replacement day is the one time switching to a heat pump adds almost no extra work. The outdoor unit, the indoor coil, and the lines are coming out anyway. A heat pump cools exactly like a central air conditioner in summer. The difference is that it heats too. It can carry most of the winter and leave the furnace as backup, or take the furnace's place entirely.
Heat pumps are also where the incentives are. EmPOWER Maryland rebates favor heat pumps that qualify. Standard air conditioners get less. So do the federal tax credits. If your furnace is also past the midpoint of its life, the case gets stronger. We will show you both options side by side and let the numbers speak.
What Installation Day Looks Like
We pull the refrigerant out of the old system. The old outdoor unit and coil come out. The new gear goes on a proper pad with room around it. In Montgomery Village and in the Kentlands, where architectural rules decide where a condenser is allowed to sit, we settle that before set day rather than after. The lines get flushed or replaced. Joints are brazed under nitrogen. We pressure test, then pull a vacuum. The charge is weighed in, then dialed in by reading. Before we leave, we run the system through a full cooling cycle, record the final test readings, register your warranty, and walk you through the thermostat. A replacement with no duct or venting changes is usually done in one day.
The part is usually the symptom
A capacitor rarely dies of old age on its own. It dies because the motor it was starting had to work too hard, and something made it work that hard.
Finding that something is the difference between a repair that holds and a repair that comes back. It is why we look at the whole system before we tell you what it needs.
Frequently asked questions
How long does it take to replace a central air conditioner?
A replacement with no duct or venting changes is usually done in one day. The old refrigerant comes out in the morning. The new outdoor unit and coil go in and get connected. By the end of the day we have pulled a vacuum, charged it, and tested it. Some jobs run into a second day. Wiring upgrades, or a hard spot to reach the equipment.
Should I replace the indoor coil when I replace the outdoor unit?
Yes. The outdoor unit and the indoor coil are built as a matched pair. Put a new outdoor unit on an old coil and you give up output, you give up savings, and you often give up the warranty. The old coil has also seen the same years of wear. Replacing both is the standard we follow on every installation.
My AC uses R-22 refrigerant. Do I have to replace it?
Not immediately, but plan for it. R-22 production ended in the United States in 2020, and only reclaimed supply remains. The system can keep running as long as it holds its charge, but the first repair that requires refrigerant becomes the practical end of the road. Replacing it moves you to today's refrigerant and today's ratings.
What SEER2 rating should I choose for my home?
It depends on how long you will own the home and how heavily you cool. Equipment at the federal minimum meets code and cools reliably. Higher tiers use less electricity per hour of cooling and are more often eligible for utility rebate programs. We present the realistic tradeoffs between tiers so the choice is informed, not upsold.
Can I get rebates for replacing my air conditioner?
EmPOWER Maryland rebates go to high-efficiency equipment. The biggest ones go to qualifying heat pumps, not to standard air conditioners. The federal tax credits work the same way. If incentives matter to your decision, that is a genuine reason to compare a heat pump during the estimate. We check current program eligibility for whichever path you choose.
Will a new air conditioner fix uneven cooling upstairs?
Only if the cause is addressed. Uneven cooling usually comes from the ducts, the insulation, and the sizing, not the equipment on its own. Swap like for like and you can inherit the same problem. Sizing the replacement to the house and inspecting the ducts identifies the real cause. Sometimes the answer is correct sizing, and sometimes it is a ductless head serving the stubborn rooms. North Potomac shows it plainly: a two-story colonial on nearly every street, warm upstairs and cool downstairs, on one system sized for the whole house. That can be a damper fix, a duct fix, or a real case for two zones, and measuring is the only way to tell which.
Which towns do you replace air conditioners in?
Rockville, Potomac, North Potomac, Travilah, Darnestown, Derwood, Redland, Gaithersburg, Washington Grove, Montgomery Village, Germantown, Boyds, Clarksburg and Olney. We keep the map small so we can get to you quickly and finish what we start.
Thinking about replacing your air conditioner this year? Request an estimate and we will show you the AC and heat pump options side by side.
Or tell us what your system is doing
Send us the details and we will call you back. If the house is very hot or very cold right now, calling is faster.