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Top-Rated Central humidifier installers and replacers in West Islip - Updated Nov 2026

Avatar for MSD Heating & Cooling
MSD Heating & Cooling
4.9(
74
)
Central Humidifier - Install or Replace

Serving West Islip, NY and surrounding areas

Approved

In business since 2002

Free estimates

Emergency services offered

"I enthusiastically recommend this company. Mehmet was always prompt for appointments and texted to let you know he was on his way. His crew worked from 7 am to 7 pm and got our new central A/C system installed in one day during a heat wave. Very professional outfit, polite and cheerful to have around."
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+1

2 neighbors recently requested a quote
Recommended by96%of homeowners
Avatar for Patience HVAC, LLC
Patience HVAC, LLC
4.9(
30
)
Central Humidifier - Install or Replace

Serving West Islip, NY and surrounding areas

Approved

In business since 2020

Free estimates

Emergency services offered

"The person that showed up is the owner. He diagnosed the problem with my central air conditioning system, was a clogged filter due to sanding spackle. Could have charged the system or fed me a bunch of lies but instead was perfectly honest, charged me an inspection fee only and buttoned everything up. I was shocked. Great guy and knows his stuff. Would definitely recommend him."
Peerless
Peerless Boiler with Hot Water
Annual Service
Response time4 hrs
Recommended by100%of homeowners
Just Rite Heating and Cooling
4.9(
132
)
Central Humidifier - Install or Replace

Serving West Islip, NY and surrounding areas

Approved

In business since 1995

Free estimates

Credit card accepted

"Eric is very responsive when you call... Eric and his crew came on time and replaced our Central Air Conditioning System. We had one issue and they came back immediately and took care of it. Eric has great customer service and did a professional job. We would recommend him highly."
Response time5 hrs
4 neighbors recently requested a quote
Recommended by97%of homeowners
Avatar for All Weather Heating & Cooling
All Weather Heating & Cooling
4.5(
70
)
Central Humidifier - Install or Replace

Serving West Islip, NY and surrounding areas

Approved

In business since 1969

Free estimates

Emergency services offered

"I had the equipment replaced, a brand new, super high efficiency, fancy, lovely stuff. It's a central air system, and it's Lennox equipment. It's high efficiency. You can get it for less than that, but you're not gonna get the high efficiency quiet and all that kind of stuff. I had received other quotes which were like more money for the same system. I have been using them since 1986. No complaints. They do their thing, and I can't fault them. I have a service contract with them for this."
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+13

Response time3 days
7 neighbors recently requested a quote
Recommended by94%of homeowners
Avatar for JB Comfort Heat and Air Conditions
JB Comfort Heat and Air Conditions
4.6(
57
)
Central Humidifier - Install or Replace

Serving West Islip, NY and surrounding areas

Approved

Super Service Award Winner

In business since 2020

Free estimates

Emergency services offered

"The installation of a new split unit Air conditioner unit was done by Joe. He installed the unit, ran the electrical work to my panel, installed all the lines needed. Joe completed the project with the expertise needed and was sure to address all the indoor and outdoor cosmetic piping and ductwork with a great appearance to meet my expectations. Joe was on time, very attentive to all my questions, emails and text messages and the price was very reasonable. I highly recommend using Joe for your AC unit installation and I will be calling him again for any future projects that I may have! 😊"
Condenser cleaning
Condenser cleaning
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+11

Response time9 hrs
3 neighbors recently requested a quote
Recommended by72%of homeowners
Avatar for Surefire Mechanical Corporation
Surefire Mechanical Corporation
4.5(
157
)
Central Humidifier - Install or Replace

Serving West Islip, NY and surrounding areas

Approved

In business since 2013

Free estimates

Emergency services offered

"I sent a message to the company in the late evening regarding my broken central AC and Jason was here Tuesday morning to look at it. He tried to repair it but was not able to due to the age of the unit and the damage. We needed a new unit and he was here to put it in first thing Wednesday morning. Took him two hours and our AC was working. He was nice and professional. We felt the price was reasonable. Would use him again and recommend his business."
4 Zone Navien Boiler
1st Floor AC System
Hi Efficient Heat and Hot Water
Snow melt sensor
Manifold

+14

Response time10 mins
Recommended by97%of homeowners
Avatar for Elm Air Conditioning Corp
Elm Air Conditioning Corp
4.4(
82
)
Central Humidifier - Install or Replace

Serving West Islip, NY and surrounding areas

Approved

In business since 1952

Free estimates

Warranties offered

"Everything was great. I’ve used them in the past for my central air conditioning and have a yearly service contract with them as well. They are professional and friendly and always there when I call. Would highly recommend them."
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14 neighbors recently requested a quote
Recommended by77%of homeowners
Avatar for Long Island HVAC
Long Island HVAC
3.8(
6
)
Central Humidifier - Install or Replace

Serving West Islip, NY and surrounding areas

Approved

In business since 2012

Free estimates

Customers say: Quick response

Long Island HVAC Inc., where service meets integrity. We are the company that treats you right even after the work is completed. Contact us for a free estimate! \n \nWith so many contractor companies to choose from choose the one that was built on the belief system of integrity. We know that one of the most important aspects of your home is the quality and performance of your heating and cooling system. Whether during the hot-humid summer or the bitter-cold winter, making sure that the inside of your home stays at a constant, comfortable temperature is of paramount importance. It is our goal to provide all of our customers with the courteous attention they deserve, any time of the day, every day of the year. Long Island HVAC, Inc. is gearing up for winter. Contact us for a free Heating estimate today! \n

 Fujitsu Ductless heat pump in a classroom
Service call for a system low on refrigerant
Solar powered attic exhaust fan
Recommended by66%of homeowners
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FAQs for central humidifier installation and replacement projects in West Islip, NY

A crawl space dehumidifier is a worthwhile investment, particularly in humid climates or if you've noticed musty odors, mold growth, or wood deterioration. Though costs range from $3,000 to $9,200, this investment helps prevent structural damage that could require far more expensive repairs later. Beyond structural protection, a properly dehumidified crawl space contributes to better overall indoor air quality and may reduce allergens throughout your home. Consider having a professional assessment to determine if your specific situation warrants this investment.

Addressing crawl space moisture effectively often requires a combination of solutions. A complete approach includes encapsulation plus dehumidifier installation. For minor moisture issues, a basic dehumidifier starting at $1,500 may suffice, while severe problems in larger spaces could require systems costing up to $14,000. The most effective moisture control strategy depends on your specific conditions, making a professional assessment valuable for determining the most cost-effective approach for your situation.

For a crawl space measuring 1,500 square feet, you'll need a dehumidifier with a daily capacity of 30 to 50 pints, with unit costs ranging from $150 to $600. Your local climate and existing moisture levels may necessitate adjusting this capacity—homes in particularly humid regions might benefit from higher-capacity units. Professional installers can measure your specific humidity conditions and recommend equipment that is appropriately sized, balancing initial cost with operating efficiency for your unique situation.

Crawl space dehumidifiers add $300 to $500 to your annual electricity expenses when operating continuously. Energy-efficient models reduce this consumption by roughly 15 to 30% compared to standard units. Most contemporary dehumidifiers feature humidity sensors that automatically cycle operation based on current conditions, helping manage energy usage. Proper crawl space encapsulation significantly improves efficiency by creating a controlled environment that requires less dehumidifier runtime, thereby reducing ongoing electricity costs.

The West Islip, NY homeowners’ guide to central humidifier installations and replacements

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