---
title: "Marran — Heating & Cooling Sales & Repair | Houzz"
canonical_html_url: https://www.houzz.com/professionals/heating-and-cooling-sales-and-repair/marran-pfvwus-pf~2082971365
markdown_url: https://www.houzz.com/md/professionals/pf~2082971365.md
entity_type: LocalBusiness
business_name: Marran
category: ["Heating & Cooling Sales & Repair"]
image: https://st.hzcdn.com/fimgs/b6a31aad0907795d_2048-w400-h400-b0-p0--.jpg
address: "20 Corporate Drive, Holtsville, New York 11742, United States"
latitude: 40.8105
longitude: -73.0416
phone: "(631) 654-2500"
website: http://www.marransecurity.com
rating: 4.4
review_count: 7
best_of_houzz_awards: 1
followers: 9
last_updated: 2026-11-08
---

# Marran

Original Houzz profile: [Marran](https://www.houzz.com/professionals/heating-and-cooling-sales-and-repair/marran-pfvwus-pf~2082971365)

## Professional summary

- **Primary category:** Heating & Cooling Sales & Repair
- **Location:** Holtsville, NY
- **Serves:** Brookhaven, Islip, Smithtown, Coram, Central Islip, Centereach, Shirley, Holbrook, Medford, East Patchogue, Selden, Hauppauge, Holtsville, Ronkonkoma, Lake Ronkonkoma, Farmingville, Sayville, Mastic, Setauket-East Setauket, Saint James, Nesconset, Ridge, East Islip, Patchogue, Stony Brook, Lake Grove, Terryville, North Bellport, East Setauket, Bohemia, Bayport, North Patchogue, Sound Beach, Oakdale, East Shoreham, Yaphank, Islip Terrace, West Sayville, Blue Point, Gordon Heights, Islandia, North Great River, Great River, Bellport, Village of the Branch, Nissequogue, Head of the Harbor, Poquott, Old Field, Belle Terre
- **Houzz rating:** 4.4 out of 5 (7 reviews)
- **Best of Houzz:** 1 award (2018), for Service.

## About

### Houzz Badges

- Recommended on Houzz

Marran Warmth & Security has been at the forefront of the heating industry for over a hundred years. Marran assisted in designing the System 2000, the most efficient heating system on the market today. We install custom security, heating, and A/C solutions at the lowest prices. Our automatic delivery and service plans ensure that our customers never find themselves without heat. Visit our oil website at www.marranoil.com and our alarm system website at www.marransecurity.com.

### Services Provided

- Air Conditioning Installation
- Air Conditioning Repair
- Boiler Installation
- Boiler Repair
- Furnace Cleaning
- Furnace Installation
- Furnace Repair
- HVAC Inspection
- HVAC Installation
- HVAC Repair
- Heat Pump Installation
- Heat Pump Repair
- Heating Repair
- Heating System Installation
- Oil to Gas Conversion
- Thermostat Installation
- Thermostat Repair
- Ventilation Installation & Repair
- Water Heater Installation
- Water Heater Repair

### Areas Served

- Brookhaven
- Islip
- Smithtown
- Coram
- Central Islip
- Centereach
- Shirley
- Holbrook
- Medford
- East Patchogue
- Selden
- Hauppauge
- Holtsville
- Ronkonkoma
- Lake Ronkonkoma
- Farmingville
- Sayville
- Mastic
- Setauket-East Setauket
- Saint James
- Nesconset
- Ridge
- East Islip
- Patchogue
- Stony Brook
- Lake Grove
- Terryville
- North Bellport
- East Setauket
- Bohemia
- Bayport
- North Patchogue
- Sound Beach
- Oakdale
- East Shoreham
- Yaphank
- Islip Terrace
- West Sayville
- Blue Point
- Gordon Heights
- Islandia
- North Great River
- Great River
- Bellport
- Village of the Branch
- Nissequogue
- Head of the Harbor
- Poquott
- Old Field
- Belle Terre

## Business Details

| Field | Value |
| --- | --- |
| Business Name | Marran |
| Address | 20 Corporate Drive, Holtsville, New York 11742, United States |
| Phone | (631) 654-2500 |
| Website | http://www.marransecurity.com |
| Followers on Houzz | 9 |

**Social profiles:**
- Facebook — https://www.facebook.com/Marranoil/?ref=br\_rs
- X (Twitter) — https://twitter.com/marranllc
- LinkedIn — https://www.linkedin.com/company/marran?trk=ppro\_cprof
- Blog — www.marransecurity.com

## Contact

- **Houzz profile:** [Marran](https://www.houzz.com/professionals/heating-and-cooling-sales-and-repair/marran-pfvwus-pf~2082971365)
- **Website:** http://www.marransecurity.com
- **Phone:** (631) 654-2500

## Credentials

- **Best of Houzz:** 1 award (2018), for Service.

## Reviews

**Overall rating: 4.4 out of 5 — 7 reviews**

### All 7 reviews

**★ — HU-193981186, Oct. 2018**

> To be short,An alarm system was installed for free but a five year security plan was signed., never worked properly , after many ,many repair visits and 1 year or so  passed without feeling safe , we had to get a new company, marran would not give up on contract and had to go to small claims court ., which by the way was full of marran customers. Terrible experience!! Don’t do business with them!

**★★★★★ — Ed Flores, Feb. 2018**

> They installed a full central ac setup for my house is Nesconset. It works perfectly. I look forward to using it again this summer.

**★★★★★ — Dylan Knowlan, Feb. 2018**

> Absolutely Phenomenal Service!
>
> Phenomenal service from all of the people at Marran. My boiler failed completely, which I confirmed with second opinions. Marran replaced it and got it up and running the next day.

**★★★★★ — Del Lynch, Sept. 2017**

> Good quality work. Would hire again.
>
> The service guys did a very thorough job installing a new boiler. The person who maintains my boiler said it had a leak, but I wanted a bigger company to do the replacement, so I hired Marran Oil to do it.

**★★★★★ — Michelle Porter, Aug. 2017**

> They installed a new water tank, and I now have as much hot water as I could want. I didn't even run out when I had six house guests at once. I also have them deliver oil to the house.

**★★★★★ — Janet McAllister, Aug. 2017**

> They replaced my boiler. I haven't had any problems with the new one, and I'm using less oil.
>
> The people who installed it were very professional and friendly.

**★★★★★ — Diane Heatley, May 2017**

> I had Marran install some nest thermostats, and the man who came did a great job. I will call them again next time I need security or HVAC work done.

## Selected projects

- [Alarm System Installation](https://www.houzz.com/hznb/projects/alarm-system-installation-pj-vj~2508762)
  - Location: Holtsville, NY
  - Photos: 3
- [Fujitsu](https://www.houzz.com/hznb/projects/fujitsu-pj-vj~2502738)
  - Location: Sag Harbor, NY
  - Photos: 4
  - Description: We installed a ductless Fujitsu A/C unit in a sunroom.
- [Peerless Installation](https://www.houzz.com/hznb/projects/peerless-installation-pj-vj~2475562)
  - Location: Medford, NY
  - Photos: 1
- [System 2000 Installation](https://www.houzz.com/hznb/projects/system-2000-installation-pj-vj~2475529)
  - Location: Patchogue, NY
  - Photos: 1
  - Description: System 2000 boiler installed in a basement with a very low ceiling.

[See all 4 projects](https://www.houzz.com/professionals/heating-and-cooling-sales-and-repair/marran-pfvwus-pf~2082971365)

## Community Q&A

**Q: How much energy would I save with this boiler?** *(in Photo Questions)*

A: Hi Ed! It depends on a lot of factors, including which system you have now, and the size of your house, but our average customer saves about 30% on their bills after they switch. Give us a call, and we'd be happy to discuss how much you'd be likely to save.

---

*Source: Houzz professional profile. Reflects the profile as of 2026-11-08.*