Frequently Asked Questions

General FAQ

According to Energy Star, a home in Central PA should have a total R-Value, or resistance to heat, between R-49 and R-60. This would equate to about 16.5″ to 20″ of total blown-in insulation.

Electrical

Old fuse panels like push-o-matics along with Federal Pacific Electric Stab-lok, Zinsco, and Sylvania panels are not to code and should be replaced. This is because the breakers will not trip when they should and pose a fire risk due to arcing between the terminals.

The size of your generator is going to be dependent on your needs. If you want your house to be fully powered during an outage a 16Kw generator or larger should provide enough power to keep your house running. But if you need just the necessities or have specific medical needs you can use a 7Kw generator to operate a combination of a sump pump, refrigerator, garage doors, and some other dedicated outlets or devices.

HVAC

The musty smell in a basement is usually from mold or mildew growth because of higher humidity levels. Adding return air from an HVAC system is a good way to lower the humidity in the basement but ultimately a whole-house dehumidifier or dedicated system, like a ductless mini-split is the best way to keep your basement dry.

A Standard 1″ air filter should be changed at least every 3 months, even as soon as monthly during heavy use times and if there is a lot of activity from people or pets. Media air filters, usually 2″ – 4″ thick, will last longer, usually around 6 months, because of a bigger surface area. These can be changed annually in some cases.

Learn more about air filters

The short answer – no, it shouldn’t be. Our duct cleanings consist of sealing each individual supply and return grille throughout the house. Then air-washing each line one at a time back to a commercial-grade, HEPA vacuum installed near the air handler or furnace. Finally sweeping the entire supply and return trunks to make certain all dirt and debris have been removed from the system. In a basic duct system, this process can easily take an entire day.

Manufacturing of residential cooling systems using freon or R-22 stopped in 2010 and the production of the refrigerant ended in 2020. This began in the 90’s because of the negative impacts of R-22 to our ozone. Being at least 10-years old most R-22 air conditioners or heat pumps are nearing or have already exceeded their average lifespan of 12-14 years. A diminishing supply of R-22 has also resulted in a dramatic price increase for freon refrigerant. As a result, making a major repair on an R-22 system is often not the best course of action.

Seasonal Energy Efficiency Ratio or SEER, is a way to measure an air conditioner or heat pumps performance during the cooling season. The minimum SEER in Pennsylvania is 13 for A/C and 14 for heat pumps. When considering replacing either, the SEER is only part of the equation, even those minimums will be an improvement on many systems over 10 years old. So, don’t get overly hung-up on a SEER rating, consider all of the other features and benefits and how a system will perform for you and your home.

An accurately sized air conditioner is critical to the performance of your system and the comfort of your home. A load calculation should be performed by a professional to determine the exact heating and cooling needs of your home. There is no real rule-of-thumb as it encompasses much more than just the square footage of the home.

HVAC systems have air filters to help keep them clean and air flowing properly. Filter sizes are determined by the size of the system and duct work. Commonly, air filters are 1” thick, then the filter is measured length by width. When choosing a filter to purchase, don’t get caught up in marketing ploys by filter manufacturers. Too dense of a filter will starve your system for return air. Stick with throw-away filters with a MERV rating of 8 or lower.

In the summer or cooling season, the upper vents should be open to return the rising hot air and keep cool air from falling. Conversely, in the winter the bottom vents should be open to pull hot air down and the cold air off of the floor.

If you find your air conditioner frozen in a block of ice, it’s best to immediately turn the system off and let it completely thaw before any additional damage occurs. There can be several reasons as to why this happens.

First, check that the system is collecting warm air from the house by confirming that return vents are clear and the air filter in the system is not clogged. Bigger issues include low refrigerant or an issue with the systems fan. Regardless, this is a clear indication of a problem and should be diagnosed by a professional right away.

A heat pump may look like it is smoking during the heating season but really it is steam as the system goes into a defrost-mode to remove frost from the coils. As long as you are not smelling smoke, this is normal operation for a heat pump in the winter.

Dust is usually generated by the activity in the home, the more people, pets, and movement throughout, the more dust. It also infiltrates the home via air leaks. Dust can also be introduced by loose or detached ductwork in attics, basements, and crawlspaces. It’s important to seal gaps around the home and ductwork. It is also important that ductwork is properly attached and in good condition.

This is a very common occurrence during the cooling season. Of course, heat naturally rises, but that’s not the primary culprit. A major contributing factor is the amount of heat that a second floor is gaining from the attic, many attics can reach 150° or higher in the summer. If an attic is under-insulated, this heat has no problem affecting the comfort of the second floor.

Second floors can also suffer from a lack of return air, while the system in the house pulls most of the warm air through the path of least resistance, i.e. the first floor, this results in hot air becoming trapped upstairs. Duct design and thermostat location also play major roles in temperature differences. Adjusting balance dampers can be a way to force more cool air to the second floor.

Plumbing

The simple answer is – No. Nothing should be flushed down your toilet aside from waste and toilet paper. Toilet paper is specifically designed to break down quickly in water.

Hard water is not necessarily bad for you to drink but it can have adverse effects on hair and skin. Otherwise, it is harmful to your home’s plumbing and any water-using appliances, resulting in a decrease in their efficiency and useful life.

The most common type of water heaters are storage tank water heaters and are typically either electric or gas-fueled. Most water heater sizes are around 40, 50, or 80 gallons. A 50-gallon water heater is fairly standard. But with a family of 5 or more and/or high water heating demands like a jacuzzi tub, going with a larger capacity will be best. Due to energy standards, electric water heaters larger than 55 gallons are required to meet a specific Energy Factor (EF) rating and will most likely need to be a heat pump water heater, fortunately, these are very efficient.

Gas fueled water heaters tend to have a much better First Hour Rating (FHR) and recovery rate to provide better performance. Where often a 50-gallon gas water heater will perform more closely to that of an 80-gallon electric and will satisfy the needs of most typical households.

Most water shut-offs are located in the basement near the water meter where your city water enters your home from the street. Some may be located in a crawl-space or utility closet. If your home utilizes well water, the shut-off should be near your well pump and tank. Be sure to locate the shut-off in your and test the operation periodically so you know it’s ready to work when you need it to.

Just like all the appliances in your home, a garbage disposal needs regular maintenance. An easy way to clean it and have it smelling fresh is to run cold water into it, turn it on and put in a whole lemon cut in half along with a bunch of ice cubes. Another good cleaning method is to use a tray of frozen vinegar cubes with cold water to run through the system. Do not use chemicals in the garbage disposal, these will damage the system.

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Trusted by Your Neighbors

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Higher priced but ABSOLUTELY the best service/quality money can buy.

Josh W.

3 months ago

My wife and I moved into our new house on Main Street Saturday. Monday night some boiler sensors went out on our radiators. Long story short our whole house started to leak from basement to 3rd floor. Their emergency services were ready to take our call at 9:30 at night. Jason walked us through how to shut off the boiler and step by step to keep further damage from happening.Fast forward to next morning less than 12 hours after the initial call took place Zimmerman’s had a technician in route to come take a look. Justin greeted us with a friendly smile and was master class in knowledge of our boiler and issues taking place. After a short time he discovered the reason for our problems. Soon enough we had a quote to fix our boiler.Not ready to jump ship and push our emergency to another day he asked if he could fix the boiler now. Justin worked for 2-3 hours until the boiler was up and running. Testing it multiple times to ensure it was functioning properly.Did I mention this all went down on 12/22 and 12/23 right before Christmas. I can’t thank Zimmerman’s enough for saving our holiday season and making us feel safe in our new home!

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Don B.

5 months ago

We highly recommend Zimmerman Plumbing and Heating in Mechanicsburg. We use them for all our heating & cooling needs. We got a new oil furnace several years ago. They had 3-4 levels of pricing. They’re not cheap, but their workmanship and Service is top-notch – the best I’ve ever come across in all my years. We have met Earnie Zimmerman personally. His guys are professional, super nice and trustworthy. We also used them for air conditioning splits in our house a few years ago- can’t recommend them enough.

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Ramona M

5 months ago

Superb experience. Interactions with salesman (John), checkpoint with Mr. Zimmerman, interactions with administrative support staff and phenomenal install team (Josh and Niko) were in one word, superb. Highly recommend.

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M W

5 months ago

I own a local small business and we had a clog. The Zimmermanns were helpful and extra attentive in helping me to get the issue resolved immediately and outside of my peak business hours. Having a reliable plumber is wonderful- having an honest plumber who understands the unique challenges of dealing with a repair quickly, cost effectively and with a cheerful disposition is priceless. I highly recommend using this incredible family owned and operated business- they get it!

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Water Street Wellness

5 months ago

Highly recommend!! They sent a plumber to my house for a sewer back-up in less than two hours of my call when they opened on Monday morning even though I was a new customer. I got a quote for a gas line to a new gas stove on Friday and some time over the weekend, we had a back up of water from a floor drain into our basement. Bill was thorough, helpful and knowledgeable and he and a second guy worked really hard to resolve the problem. I am so grateful for their service. They also installed the new gas line when they were done with the sewer problem. I’m a customer for life!

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Lori

10 months ago

We recently had a very disappointing experience with the service company assigned by our home warranty provider. Upon arrival, the technician insisted our air conditioning unit had not been cleaned and refused to proceed with service until it was. They even offered to clean it themselves for $350 on the spot.Since we had EZimmerman clean the unit back in May, we immediately contacted them to clarify the situation. They responded with exceptional professionalism and understanding, and within two hours, they sent a technician to reservice the unit. As we expected, the unit was not as dirty as the other company had claimed. Nevertheless, EZimmerman recleaned it thoroughly, treating us with the same courtesy and expertise we’ve come to appreciate from their team. They did not charge us for the additional service, and their responsiveness and integrity truly stood out.We continue to be impressed by the quality of work and customer care at EZimmerman, and I will wholeheartedly recommend them for any plumbing, heating, or air conditioning needs.

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Gloria A.

10 months ago

I recently had a mini split system installed by Zimmerman’s and was very satisfied with the service I received. The communication was excellent and they thoroughly prepared for and executed the job. The team coordinated perfectly with one another and communicated every facet of the install and usage of the units to me. It was a pleasure meeting Earnie and his team throughout this process and I am extremely grateful for the level of service that I received throughout each phase of the process. I highly recommend them to anyone looking to have work done on their homes and I will be happily working with them again in the future.

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Justin H.

1 years ago

GREAT JOB! workers are super. A bit pricey but you get what you pay for and the owner, Ernie is very involved in the business.HIGHLY RECOMMEND THEM….

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Angela A.

1 years ago

Our experience with Zimmermans was amazing! Scott Mease came to our home after hours on a Friday evening after we discovered issues with our plumbing. He was extremely knowledgeable and was quickly able to locate and fix our issue. Highly recommend this company!

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Anne J.

1 years ago

Excellent service and decent prices. We had our water heater replaced and the work done was excellent our service man took exceptional care to keep all are…

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Suzanne R.

1 years ago

First experience with Zimmerman, but it will not be our last. We had an electric problem, which we thought was not a danger. Although we called on a Saturday, Jayson arranged for Nick to come that day. Nick diagnosed the problem and fixed it. As we understand it, our issue was potentially dangerous. Thanks again for the wonderful service.

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John K.

1 years ago

Our experience with Zimmermans was amazing! Scott Mease came to our home after hours on a Friday evening after we discovered issues with our plumbing. He was extremely knowledgeable and was quickly able to locate and fix our issue. Highly recommend this company!

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Anne J.

1 years ago

Prompt and professional. Provided very detailed explanations and options.

Kelly H.

1 years ago

Like doing business with them, Always very pleasant when here. Very dependable & get 2 the problem

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Mary B.

1 years ago

DJ is a great tech who has serviced us a few times over the years. Punctual, thorough, and found an issue making some great value recommendations. Highly recommend Zimmerman.

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Nancy R.

1 years ago

Prompt and professional. Provided very detailed explanations and options.

Kelly D.

1 years ago

Top of the line service!

Susan Dellinger

1 years ago

Came out the next morning to fix our bathroom. Charged less than I expected. Always excellent service!!! I won’t use anyone else!!

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Theresa C

1 years ago

The service was excellently performed and the visit involved no surprises. The staff was both courteous and informative. I would not hesitate to call Zimmerman for any future plumbing problems.

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Bob G.

1 years ago
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Get in Touch With Us Today!

To schedule an installation, plumbing repair service or HVAC service, or to get a totally free estimate or find out more about our wide range of plumbing and HVAC services and which ones might be right for you, give us a call or drop us an email at the contact information listed below. We can’t wait to welcome you to the Zimmerman Plumbing, Heating & Air Conditioning family!

HVAC technician in a red polo shirt installing a smart thermostat on a home hallway wall.