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TRUSTED BY PRESTON, MD HOMEOWNERS

  • Average homeowner rating star icon4.5
    Average homeowner rating
  • Verified reviews icon123
    Verified heating and air conditioning services reviews

Find Heating and air conditioning pros in Preston

"We had a great experience with them! Super communicative, great price and super quick. Highly recommend"

Lucie B on December 2024

Duke's Electrical Services is a small, family owned and operated business. The owner, a master electrician, preformes all the work personally to ensure the highest quality workmanship.

"We had a great experience with them! Super communicative, great price and super quick. Highly recommend"

Lucie B on December 2024


Avatar for Major League HVAC

Major League HVAC

4.98(
38
)
Approved Pro

Major League HVAC

4.98(
38
)
Approved Pro
Super Service Award
Customers say: True professional
5 years of experience
Free onsite estimate

It can be a daunting task looking for not only the right contractor for your job but also the right contractor for you. We completely understand what you're going through. We know every customer has different desires, different needs and different schedules. We're not only here to turn your ideas into reality but to make it a memorable experience every step of the way. Call us right now, no matter where you are in the planning process.

"Mike's team did a great job, installing a new HVAC system, including all equipment, ductwork, insulation, piping, controls, etc. Install in a home without existing duct or central HVAC. System included a combination ducted system for 1st floor and mini split system for 2nd floor (this system, as recommended by Major League, best suited for the existing conditions, accommodating the different zones/heat loads between the 1st & 2nd floor, and the fact that there was limited space for duct work for the 2nd floor ). 1. Work was completed as quoted, and competitively priced 2. Well coordinated, and worked around challenging existing conditions such as plumbing and tight crawl spaces, furnishings, etc. 3. Well organized and planned installation. 4. Very knowledgeable 5. Options/details recommendations (such as locations of diffusers, returns, stats, etc.) were discussed/reviewed with me. 6. Work was completed as scheduled. 7. I would highly recommend them"

Jonathan B on June 2025

It can be a daunting task looking for not only the right contractor for your job but also the right contractor for you. We completely understand what you're going through. We know every customer has different desires, different needs and different schedules. We're not only here to turn your ideas into reality but to make it a memorable experience every step of the way. Call us right now, no matter where you are in the planning process.

"Mike's team did a great job, installing a new HVAC system, including all equipment, ductwork, insulation, piping, controls, etc. Install in a home without existing duct or central HVAC. System included a combination ducted system for 1st floor and mini split system for 2nd floor (this system, as recommended by Major League, best suited for the existing conditions, accommodating the different zones/heat loads between the 1st & 2nd floor, and the fact that there was limited space for duct work for the 2nd floor ). 1. Work was completed as quoted, and competitively priced 2. Well coordinated, and worked around challenging existing conditions such as plumbing and tight crawl spaces, furnishings, etc. 3. Well organized and planned installation. 4. Very knowledgeable 5. Options/details recommendations (such as locations of diffusers, returns, stats, etc.) were discussed/reviewed with me. 6. Work was completed as scheduled. 7. I would highly recommend them"

Jonathan B on June 2025


Avatar for Major league hvac

Major league hvac

5.00(
17
)
Approved Pro

Major league hvac

5.00(
17
)
Approved Pro
Super Service Award
Customers say: Quick response
Recommended by 100% of Angi customers
Recommended by 100% of HomeAdvisor customers
Free onsite estimate

Heating and air conditioning. Sales, service, and installation. 20 yrs of experience in the hvac field. We are an American Standard dealer, but service all brands. Our services range from simple repairs to complete system installs, and duct cleaning. Licensed and Nate certified techs.

"Had a complete HVAC system replacement. Through the whole process, they did what they said they would do and within the time frame that I was told. They responded timely and answered all my questions and concerns along the way. I am an impressed customer and delighted to recommend Major League HVAC."

joe k on August 2025

Heating and air conditioning. Sales, service, and installation. 20 yrs of experience in the hvac field. We are an American Standard dealer, but service all brands. Our services range from simple repairs to complete system installs, and duct cleaning. Licensed and Nate certified techs.

"Had a complete HVAC system replacement. Through the whole process, they did what they said they would do and within the time frame that I was told. They responded timely and answered all my questions and concerns along the way. I am an impressed customer and delighted to recommend Major League HVAC."

joe k on August 2025


Avatar for Gunther's Electric, Inc.

Gunther's Electric, Inc.

4.92(
19
)
Approved Pro

Gunther's Electric, Inc.

4.92(
19
)
Approved Pro
Customers say: Quality work
Recommended by 100% of Angi customers
Recommended by 100% of HomeAdvisor customers
64 years of experience

Gunther's Electric, Inc. Electrical Contractors is a family run business that has been in operation since 1961. We are dedicated to providing the most competitive services at the most competitive price! The business was founded by Gunther Schiwy, and since has passed down the line to his son Michael Schiwy, and now to his grandson, Matt Schiwy. We have years of experience in residential, commercial, and industrial contracting. We have a strong reputation of excellent workmanship, punctuality, and respect towards our customers. I hope that you will consider Gunther’s Electric next time you have the need for an electrical contractor.

"Great job!!"

Max W on October 2023

Gunther's Electric, Inc. Electrical Contractors is a family run business that has been in operation since 1961. We are dedicated to providing the most competitive services at the most competitive price! The business was founded by Gunther Schiwy, and since has passed down the line to his son Michael Schiwy, and now to his grandson, Matt Schiwy. We have years of experience in residential, commercial, and industrial contracting. We have a strong reputation of excellent workmanship, punctuality, and respect towards our customers. I hope that you will consider Gunther’s Electric next time you have the need for an electrical contractor.

"Great job!!"

Max W on October 2023


"Fast service..very neat and careful. "

Priscilla T on July 2025

Ward Plumbing is east Maryland�s premier plumbing solution. We offer plumbing, heating and gas-fitter services, a two-year warranty on labor and materials, and a 100% customer satisfaction guarantee.

"Fast service..very neat and careful. "

Priscilla T on July 2025


Avatar for Shore2shore heating and cooling

Shore2shore heating and cooling

5.00(
13
)
Approved Pro

Shore2shore heating and cooling

5.00(
13
)
Approved Pro
Super Service Award
Customers say: Quick response
17 years of experience
Free onsite estimate

We install HVAC equipment at an affordable price offering great service and quality work. Additionally, we take on service calls and system diagnostics. Our company takes pride in the work we perform and you can be assured it will get done the right way!

"Excellent and prompt service. They saved me $1800 compared to price quoted by FH FURR for installing new furnace. Highly recommend."

Cyndia R on November 2025

We install HVAC equipment at an affordable price offering great service and quality work. Additionally, we take on service calls and system diagnostics. Our company takes pride in the work we perform and you can be assured it will get done the right way!

"Excellent and prompt service. They saved me $1800 compared to price quoted by FH FURR for installing new furnace. Highly recommend."

Cyndia R on November 2025


Wells HVAC, LLC

5.00(
5
)
Approved Pro

Wells HVAC, LLC

5.00(
5
)
Approved Pro
Super Service Award
Customers say: Quick response
16 years of experience
Free onsite estimate

We're dedicated to providing our clients with the very best in installation, service, and repair for your heating and cooling needs. Our company is built on honesty and integrity. We specialize in central A/C and cooling systems as well as heating and furnace systems. We take pride in the quality of our work and our commitment to outstanding results. We look forward to building long-term relationships with our clients, and guarantee your satisfaction. Fully licensed and Insured!

"I’m overly pleased with the work that Wells HVAC provided me. The heating/cooling in my home was antiquated, inefficient & unreliable. However, Michael & his expert-tech remedied those solutions for me. In addition to that; they were punctual in arrival times, they were neat & tidy, and something that stood out to me was their politeness! It feels so good not to be stressed about an unreliable climate & atmosphere in my home now thanks to Wells HVAC. I have, and will continue to highly recommend them to my friends, family, and associates. If you’re on the limb about getting a service done or whom to get it done by… Just call Michael, I promise there will be no regrets or disappointment! "

Christopher P on June 2025

We're dedicated to providing our clients with the very best in installation, service, and repair for your heating and cooling needs. Our company is built on honesty and integrity. We specialize in central A/C and cooling systems as well as heating and furnace systems. We take pride in the quality of our work and our commitment to outstanding results. We look forward to building long-term relationships with our clients, and guarantee your satisfaction. Fully licensed and Insured!

"I’m overly pleased with the work that Wells HVAC provided me. The heating/cooling in my home was antiquated, inefficient & unreliable. However, Michael & his expert-tech remedied those solutions for me. In addition to that; they were punctual in arrival times, they were neat & tidy, and something that stood out to me was their politeness! It feels so good not to be stressed about an unreliable climate & atmosphere in my home now thanks to Wells HVAC. I have, and will continue to highly recommend them to my friends, family, and associates. If you’re on the limb about getting a service done or whom to get it done by… Just call Michael, I promise there will be no regrets or disappointment! "

Christopher P on June 2025


Avatar for PELAGIC SERVICES LLC.

PELAGIC SERVICES LLC.

4.73(
11
)
Approved Pro

PELAGIC SERVICES LLC.

4.73(
11
)
Approved Pro
Customers say: Quick response
10 years of experience
Free onsite estimate

For all your needs. TV Install, Painting, Sheetrock, Custom Carpentry, Tile, Decks & Docks, Electrical, HVAC, Plumbing, Brickwork & Concrete, Additions, Remodeling, Handymen Services , landscaping, all marine services. "Upper-level property management & yacht care” Contact Justin ,for a free on site evaluation!

"Justin was quick, professional and friendly. "

Mary G on December 2025

For all your needs. TV Install, Painting, Sheetrock, Custom Carpentry, Tile, Decks & Docks, Electrical, HVAC, Plumbing, Brickwork & Concrete, Additions, Remodeling, Handymen Services , landscaping, all marine services. "Upper-level property management & yacht care” Contact Justin ,for a free on site evaluation!

"Justin was quick, professional and friendly. "

Mary G on December 2025


AJS Climate Solutions LLC

5.00(
2
)
Approved Pro

AJS Climate Solutions LLC

5.00(
2
)
Approved Pro
Customers say: Quick response
Recommended by 100% of Angi customers
Recommended by 100% of HomeAdvisor customers
2 years of experience

AJS Climate Solutions LLC is committed to excellence in every aspect of our business. We uphold a standard of integrity bound by fairness, honesty, and personal responsibility. Our distinction is the quality of service we bring to our customers. Accurate knowledge of our trade combined with ability is what makes us true professionals. Above all, we are watchful of our customers' interests, and make their concerns the basis of our business.

"Top notch very knowable and work hard to get the job done right and quick. I have already referred them to someone who has used them on multiple jobs and is ver happy with them"

Hal C on February 2024

AJS Climate Solutions LLC is committed to excellence in every aspect of our business. We uphold a standard of integrity bound by fairness, honesty, and personal responsibility. Our distinction is the quality of service we bring to our customers. Accurate knowledge of our trade combined with ability is what makes us true professionals. Above all, we are watchful of our customers' interests, and make their concerns the basis of our business.

"Top notch very knowable and work hard to get the job done right and quick. I have already referred them to someone who has used them on multiple jobs and is ver happy with them"

Hal C on February 2024


"Excellent, no problems. My car was new the first year I used the service and there has never been any damage during the transports. The men picking up and delivering the car have always been pleasant and cooperative. Both Ely and Guy at United Transport has been highly responsive to my needs. I would highly recommend this company."

CLAUDIA H on October 2021

United Freight of America is your all inclusive transport solution. CONTACT US FOR A QUOTE. please include pick up and Drop off locations and vehicle information

"Excellent, no problems. My car was new the first year I used the service and there has never been any damage during the transports. The men picking up and delivering the car have always been pleasant and cooperative. Both Ely and Guy at United Transport has been highly responsive to my needs. I would highly recommend this company."

CLAUDIA H on October 2021

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Heating and Air Conditioning questions, answered by experts

You can air condition your Arizona room by extending your home’s existing HVAC system or adding a ductless mini-split system. Arizona rooms that have full windows rather than screens only are a better choice for air conditioning—screens will let the cold air out as fast as the air conditioner can make it. 

Mold in your air conditioner isn't a good thing, as it can be harmful to your health. If the mold travels through the ductwork or is blown out of the A/C, you and your family can inhale mold spores and develop respiratory illnesses and other problems. Preventing mold from growing in the air conditioner will help protect your health.

The simplest indicator is how long it’s been since your last tune-up. You should schedule an annual AC tune-up each spring. Beyond that, there are multiple signs that your AC needs a quick check by a professional. These issues include higher-than-average energy bills, decreased air flow from vents, higher indoor temperatures, and an air conditioning unit that stays on all the time or frequently turns on and off.

Some states require special licenses for HVAC professionals, but most don’t. However, even if there is no state requirement for HVAC licensing, local requirements might exist. It’s always a good idea to check if HVAC technicians need to be licensed in your area and then Angi’s contractor license lookup tool to confirm that the contractor you’re hiring holds the necessary licenses. Additionally, you should always ensure the company you’re hiring is fully insured to avoid potential lawsuits if a technician gets injured on your property.

In some cases, yes, portable air conditioners are worth buying. They’re a relatively affordable option for cooling small spaces. (On average, they cost between $100 and $500 per unit.) Plus, they’re easy to set up, and you can move them around to cool various parts of your home as needed. However, they aren’t the most efficient AC option, and they tend to be noisy.

The Preston, MD homeowners’ guide to heating and air conditioning services

From average costs to expert advice, get all the answers you need to get your job done.

What do you need done? We’ll find top pros.
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