--- title: "A & S Nathan Heating & Cooling LLC" description: "A&S Nathan Heating & Cooling is a heating and air conditioning company in the Ansonia area. When one recent customer's furnace pilot light went out, they c" doc_version: "2026-10-09" last_updated: "2026-10-09" --- # A & S Nathan Heating & Cooling LLC **Trade:** HVAC / Heating & Cooling · **Address:** 21 Clifton Ave, Ansonia, CT 06401 · **Phone:** (203) 735-5332 · **Website:** https://www.nathanheating.com/ · **Languages:** English **Rating: 4.6/5** (high confidence) — from 577 reviews across 6 sources. 97% of sentiment-scored reviews read net-positive. Last 6 months: 210 reviews, 1 negative. ## The honest read A&S Nathan Heating & Cooling is a heating and air conditioning company in the Ansonia area. When one recent customer's furnace pilot light went out, they called late in the day and two service men were at the home first thing the next morning, getting the heat going right away. The company says it has been in business 26 years, and its website lists a service area that includes New Haven, Hamden, Bridgeport, Shelton, Stratford and Trumbull. On Google it shows 4.9 stars from 739 ratings, and its BBB page carries an A+ grade and lists it as accredited. One customer whose boiler was down said the company got the needed parts within 2 days and came to install it right away. Ricardo cleaned and serviced a customer's oil-fired boiler, cleaned up afterward and fully tested the equipment, and that customer said they keep using A&S Nathan every year. On a 24-year-old AC unit, a technician took the time to find the problem instead of saying a new unit was needed. Kyle and crew replaced an A/C evaporator heat exchanger and hand-fitted a sheet metal heat shield to the existing duct work. Dave checked one customer's heating and hot water systems and gave a lesson on functions, alarms and controls, which that customer said they needed because modern controls were new to them. A 2023 customer said four guys arrived at 7 am to replace an oil boiler, protected the basement and stairs, finished in one day and walked through the valves and shut-offs. A 2022 customer said the company replaced a 33-year-old boiler, and that A&S had also installed a new central a/c system and replaced an indoor oil tank. A 2025 customer said David and his team came out early on a bitter cold, snowy day after the boiler stopped on a Sunday, and found the replacement parts the same day. A 2025 commenter on r/Connecticut said A&S Nathan had always been pretty good about coming out and dealing with emergency stuff promptly; a 2021 commenter there said they don't go too far down Fairfield County. A recent customer who owns rental properties in Fairfield County wrote that service slipped after the former owner sold, and that anything that went wrong seemed not to be covered by the service contract, resulting in an exorbitant bill. A 2024 customer said a service rep was training a new guy while charging an hourly rate, and that two parts that were not broken were replaced and charged at $360 even though the customer had asked the rep to confirm before changing parts. That 2024 customer also said follow-up work on the same issue came at no additional labor charge, and that a manager called back but was rude. **Strengths:** - Next-morning furnace call — two service men came after a late-day call - Oil boiler servicing — a recent customer said Ricardo cleaned up and tested everything - Older AC diagnosis — a technician found the problem on a 24-year-old unit - One-day boiler replacement — a 2023 customer said four guys finished in one day **Concerns:** - Service contract coverage — a recent rental owner said repairs went uncovered - Unconfirmed part swaps — a 2024 customer was charged for two parts not broken ## Claims & citations Every claim below is backed by real evidence rows — uncited claims are dropped in code before publication. - Heating and air conditioning company in the Ansonia area _(confidence: medium)_ - [reddit.com](https://www.reddit.com/r/Connecticut/comments/txu9lx/im_spending_more_on_heating_oil_than_my_property/i3or3n8/) — “r/Connecticut — A&S Nathan is one in the Ansonia area.” - [Official Website](https://www.nathanheating.com) — “Stated service area (self-reported): New Haven, Fairfield, Ansonia, Clifton, Bridgeport, Easton, Monroe, Newtown, Shelton, Stratford, Trumbu…” - Says it has been in business 26 years _(confidence: medium)_ - [Official Website](https://www.nathanheating.com) — “Self-reported 26 years in business” - 4.9 stars from 739 Google ratings _(confidence: high)_ - [Google](https://www.google.com/maps/search/?api=1&query=A%20%26%20S%20Nathan%20Heating%20%26%20Cooling%20LLC&query_place_id=ChIJ5RFmLJ3g54kRkC2JxjfIXbc) — “Google: 4.9★ from 739 ratings” - BBB grade of A+ and listed as accredited _(confidence: high)_ - [Better Business Bureau](https://www.bbb.org/us/ct/ansonia/profile/heating-and-air-conditioning/a-s-nathan-heating-cooling-llc-0111-84001408) — “Better Business Bureau grade: A+” - [Better Business Bureau](https://www.bbb.org/us/ct/ansonia/profile/heating-and-air-conditioning/a-s-nathan-heating-cooling-llc-0111-84001408) — “Better Business Bureau: accredited / certified / member” - Two service men arrived the next morning after a late-day call about a furnace pilot light and got the heat going _(confidence: high)_ - [Google Reviews](https://www.google.com/maps/reviews/data=!4m8!14m7!1m6!2m5!1sCi9DQUlRQUNvZENodHljRjlvT21WWFVqbENZakZDU2tORlEyNHRWbWRUY21wNE1XYxAB!2m1!1s0x0:0xb75dc837c6892d90!3m1!1s2@1:CAIQACodChtycF9oOmVXUjlCYjFCSkNFQ24tVmdTcmp4MWc%7C%7C?hl=en-US) — “5★ Pilot light went out on my furnace. Called late in day and there were 2 service men at my home first thing the next morning. They were ve…” - Got parts within 2 days and came to install right away when a customer's boiler was down _(confidence: high)_ - [Google Reviews](https://www.google.com/maps/reviews/data=!4m8!14m7!1m6!2m5!1sCi9DQUlRQUNvZENodHljRjlvT2pKdlQwMTJOelEwVWtsdGJ6VXlUakZ5VEhWTFNFRRAB!2m1!1s0x0:0xb75dc837c6892d90!3m1!1s2@1:CAIQACodChtycF9oOjJvT012NzQ0UkltbzUyTjFyTHVLSEE%7C%7C?hl=en-US) — “5★ Honest service. Great communication and they feel reliable. I will update once appliance is fix. Update: 10/8/2026 They got the parts …” - Cleaned and serviced an oil-fired boiler and fully tested the equipment _(confidence: high)_ - [Google Reviews](https://www.google.com/maps/reviews/data=!4m8!14m7!1m6!2m5!1sCi9DQUlRQUNvZENodHljRjlvT2xCd1VWVTFXbGhqTnpKMVltMWllRzlTVFc1Wk5FRRAB!2m1!1s0x0:0xb75dc837c6892d90!3m1!1s2@1:CAIQACodChtycF9oOlBwUVU1WlhjNzJ1Ym1ieG9STW5ZNEE%7C%7C?hl=en-US) — “5★ The A&S Nathan Technician, Ricardo, arrived on time. He was very personable and knowledgeable. He was meticulous and thorough in his cl…” - A technician found the problem on a 24-year-old AC unit instead of recommending a new unit _(confidence: high)_ - [Google Reviews](https://www.google.com/maps/reviews/data=!4m8!14m7!1m6!2m5!1sCi9DQUlRQUNvZENodHljRjlvT25sUFdXMVJNR1JLWXpkZlduZDNVV3gxUkMxcllVRRAB!2m1!1s0x0:0xb75dc837c6892d90!3m1!1s2@1:CAIQACodChtycF9oOnlPWW1RMGRKYzdfWnd3UWx1RC1rYUE%7C%7C?hl=en-US) — “5★ Technician did a great job took the time to find the problem on a 24 year old AC unit instead of just saying I need a new unit” - Replaced an A/C evaporator heat exchanger and hand-fitted a sheet metal heat shield to existing duct work _(confidence: high)_ - [Google Reviews](https://www.google.com/maps/reviews/data=!4m8!14m7!1m6!2m5!1sCi9DQUlRQUNvZENodHljRjlvT2pWV1VGaEdWWHBIYTBoQ1MycG9ORTV0YjAxYVUwRRAB!2m1!1s0x0:0xb75dc837c6892d90!3m1!1s2@1:CAIQACodChtycF9oOjVWUFhGVXpHa0hCS2poNE5tb01aU0E%7C%7C?hl=en-US) — “5★ A&S Nathan did a great job replacing my A/C unit evaporator heat exchanger. Kyle and crew did an expert job hand fitting the sheet metal…” - In a 2023 review, a customer said four workers replaced an oil boiler in one day _(confidence: high)_ - [Google Reviews](https://www.google.com/maps/reviews/data=!4m8!14m7!1m6!2m5!1sChZDSUhNMG9nS0VJQ0FnSURwNmJucGZ3EAE!2m1!1s0x0:0xb75dc837c6892d90!3m1!1s2@1:CIHM0ogKEICAgIDp6bnpfw%7C%7C?hl=en-US) — “5★ The A&S Nathan team showed up this morning bright and early at 7 am to install and replace my oil boiler. This was a big job and there w…” - In a 2022 review, a customer described a 33-year-old boiler replacement, a central a/c install and an indoor oil tank replacement _(confidence: high)_ - [Google Reviews](https://www.google.com/maps/reviews/data=!4m8!14m7!1m6!2m5!1sChdDSUhNMG9nS0VJQ0FnSUNCOHJiQnhnRRAB!2m1!1s0x0:0xb75dc837c6892d90!3m1!1s2@1:CIHM0ogKEICAgICB8rbBxgE%7C%7C?hl=en-US) — “5★ Absolutely a 10 out of 10 rating. We had to have our 33 year old boiler replaced. The crew was here on time, were honest, efficient, he…” - In a 2025 review, a customer said the team restored a boiler on short notice in winter and found parts the same day _(confidence: high)_ - [Google Reviews](https://www.google.com/maps/reviews/data=!4m8!14m7!1m6!2m5!1sChZDSUhNMG9nS0VJQ0FnSURmbnV5YlpREAE!2m1!1s0x0:0xb75dc837c6892d90!3m1!1s2@1:CIHM0ogKEICAgIDfnuybZQ%7C%7C?hl=en-US) — “5★ Thank you to David and his team who came out quite early on a bitter cold and snowy day. Our boiler stopped working on Sunday and they w…” - A 2025 r/Connecticut commenter said A&S Nathan had always been pretty good about handling emergencies promptly _(confidence: medium)_ - [reddit.com](https://www.reddit.com/r/Connecticut/comments/1n6nd6o/how_many_of_you_purchase_a_furnace_service/nc1j01z/) — “r/Connecticut — For service I use A&S Nathan and just call when it is needed. They have always been pretty good about coming out and dealing…” - A recent rental-property owner said service slipped after the former owner sold and service-contract repairs went uncovered, ending in an exorbitant bill _(confidence: medium)_ - [Google Reviews](https://www.google.com/maps/reviews/data=!4m8!14m7!1m6!2m5!1sCi9DQUlRQUNvZENodHljRjlvT2tVelJXaFZlV05sYVdwSWFFdDFWMnAzYTBwaE9FRRAB!2m1!1s0x0:0xb75dc837c6892d90!3m1!1s2@1:CAIQACodChtycF9oOkUzRWhVeWNlaWpIaEt1V2p3a0phOEE%7C%7C?hl=en-US) — “1★ I would say once a reputable outfit since the former owner sold out we began to notice shotty serviced runaround service responses and …” - In a 2024 review, a customer said two parts that were not broken were replaced and charged at $360, and a trainee's time was billed hourly _(confidence: medium)_ - [Google Reviews](https://www.google.com/maps/reviews/data=!4m8!14m7!1m6!2m5!1sChdDSUhNMG9nS0VJQ0FnSUNQbzhPVjlRRRAB!2m1!1s0x0:0xb75dc837c6892d90!3m1!1s2@1:CIHM0ogKEICAgICPo8OV9QE%7C%7C?hl=en-US) — “2★ The Good: Came out in a timely manner, 1 of 2 service reps were knowledgeable and professional. Did the follow up work to the same issue…” - Specializes in HVAC / Heating & Cooling _(confidence: high)_ - [Google Reviews](https://www.google.com/maps/reviews/data=!4m8!14m7!1m6!2m5!1sCi9DQUlRQUNvZENodHljRjlvT21WWFVqbENZakZDU2tORlEyNHRWbWRUY21wNE1XYxAB!2m1!1s0x0:0xb75dc837c6892d90!3m1!1s2@1:CAIQACodChtycF9oOmVXUjlCYjFCSkNFQ24tVmdTcmp4MWc%7C%7C?hl=en-US) — “5★ Pilot light went out on my furnace. Called late in day and there were 2 service men at my home first thing the next morning. They were ve…” - [Google Reviews](https://www.google.com/maps/reviews/data=!4m8!14m7!1m6!2m5!1sCi9DQUlRQUNvZENodHljRjlvT2xCd1VWVTFXbGhqTnpKMVltMWllRzlTVFc1Wk5FRRAB!2m1!1s0x0:0xb75dc837c6892d90!3m1!1s2@1:CAIQACodChtycF9oOlBwUVU1WlhjNzJ1Ym1ieG9STW5ZNEE%7C%7C?hl=en-US) — “5★ The A&S Nathan Technician, Ricardo, arrived on time. He was very personable and knowledgeable. He was meticulous and thorough in his cl…” - [Google Reviews](https://www.google.com/maps/reviews/data=!4m8!14m7!1m6!2m5!1sCi9DQUlRQUNvZENodHljRjlvT2xFM09HSm5SVEJ0TTFwaFRsVTFjR0kwUWxwRGJsRRAB!2m1!1s0x0:0xb75dc837c6892d90!3m1!1s2@1:CAIQACodChtycF9oOlE3OGJnRTBtM1phTlU1cGI0QlpDblE%7C%7C?hl=en-US) — “5★ Dave has done numerous jobs at my house over the past 2+ years, including fixing my Central A/C this morning (Aug 4, 2026) -- always a fr…” - [Google Reviews](https://www.google.com/maps/reviews/data=!4m8!14m7!1m6!2m5!1sCi9DQUlRQUNvZENodHljRjlvT2pWV1VGaEdWWHBIYTBoQ1MycG9ORTV0YjAxYVUwRRAB!2m1!1s0x0:0xb75dc837c6892d90!3m1!1s2@1:CAIQACodChtycF9oOjVWUFhGVXpHa0hCS2poNE5tb01aU0E%7C%7C?hl=en-US) — “5★ A&S Nathan did a great job replacing my A/C unit evaporator heat exchanger. Kyle and crew did an expert job hand fitting the sheet metal…” - [Google Reviews](https://www.google.com/maps/reviews/data=!4m8!14m7!1m6!2m5!1sChZDSUhNMG9nS0VJQ0FnSURwNmJucGZ3EAE!2m1!1s0x0:0xb75dc837c6892d90!3m1!1s2@1:CIHM0ogKEICAgIDp6bnpfw%7C%7C?hl=en-US) — “5★ The A&S Nathan team showed up this morning bright and early at 7 am to install and replace my oil boiler. This was a big job and there w…” ## License Status: **not_found** — verified against the official CT state registry, never self-reported. Re-check at the official registry: https://www.elicense.ct.gov/Lookup/LicenseLookup.aspx ## Sources - [Local News](https://ctsheatingandcooling.com/ansonia-ct/): Listed on this source - [Google Reviews](https://www.google.com/maps/search/?api=1&query=A%20%26%20S%20Nathan%20Heating%20%26%20Cooling%20LLC&query_place_id=ChIJ5RFmLJ3g54kRkC2JxjfIXbc): Listed on this source - [Google](https://www.google.com/maps/search/?api=1&query=A%20%26%20S%20Nathan%20Heating%20%26%20Cooling%20LLC&query_place_id=ChIJ5RFmLJ3g54kRkC2JxjfIXbc): 4.9★ from 739 ratings - [Official Website](https://www.nathanheating.com): 26 yrs in business · Self-reported profile and service details - [Better Business Bureau](https://www.bbb.org/us/ct/ansonia/profile/heating-and-air-conditioning/a-s-nathan-heating-cooling-llc-0111-84001408): Listed on this source - [BuildZoom](https://www.buildzoom.com/contractor/a-s-nathan-heating-cooling-llc): Listed on this source ## Mentions Unverified third-party mentions found on the open web — relay with attribution ("a Reddit commenter said…"), never as Tavlee's own finding. - “For service I use A&S Nathan and just call when it is needed. They have always been pretty good about coming out and dealing with emergency stuff promptly.” — u/MrBleah in r/Connecticut (2025-09-02) — https://www.reddit.com/r/Connecticut/comments/1n6nd6o/how_many_of_you_purchase_a_furnace_service/nc1j01z/ - “A&S Nathan is one in the Ansonia area.” — u/coy_and_vance in r/Connecticut (2022-04-06) — https://www.reddit.com/r/Connecticut/comments/txu9lx/im_spending_more_on_heating_oil_than_my_property/i3or3n8/ - “I use A&S Nathan and they're really good, but they don't go too far down fairfield county” — u/IsThatYourBed in r/Connecticut (2021-09-21) — https://www.reddit.com/r/Connecticut/comments/ps1h4v/oil_burner_maintenance/hdntoio/ ## Recent reviews - **5/5 · Google Reviews · Steven Ly · 2026-10-08**: Honest service. Great communication and they feel reliable. I will update once appliance is fix. Update: 10/8/2026 They got the parts needed within 2 days and came to install it right away because the boiler was down. Good people, great service, and do their work proficiently. - **5/5 · Google Reviews · Jill Koos · 2026-10-08**: Pilot light went out on my furnace. Called late in day and there were 2 service men at my home first thing the next morning. They were very nice, informative and got my heat going for me right away. They answered all my questions, told me all my options going forward. I'm very happy with this servic… - **5/5 · Google Reviews · Mike McKenna · 2026-10-07**: Mark Did great job fixing HVAC. Very personable and helpful to our family. BThank you! - **5/5 · Google Reviews · Sharon Goodhue · 2026-10-05**: Dave was great. Fixed our problem and explained what was going on. Thanks Dave - **5/5 · Google Reviews · Angel Sanchez · 2026-10-05**: Excellent service, and they are very professional. - **5/5 · Google Reviews · Scott Hibson · 2026-10-05**: Wes was amazing, on time and actually beat me to my house. Efficient and friendly. - **5/5 · Google Reviews · Jay Polydys · 2026-10-05**: Technician did a great job took the time to find the problem on a 24 year old AC unit instead of just saying I need a new unit - **5/5 · Google Reviews · Noreen Pokras · 2026-10-03**: I have been so pleased with this company. The service is outstanding and the techs are so knowledgeable. - **1/5 · Google Reviews · Mattheus Ferreira · 2026-10-02**: I would say once a reputable outfit since the former owner sold out we began to notice shotty serviced runaround service responses and their service contract another disappointment. Seems anything that goes wrong just so happens to be not covered resulting in an exorbitant bill as an owner of mult… - **5/5 · Google Reviews · Bruce Abbott · 2026-10-02**: Dave performed a check of our heating/ hot water systems, along with a lesson on functions, alarms and controls. We needed this because we moved in last year and modern controls were new to us. He explained everything very well, worth every penny. --- Data freshness: last scanned 2026-10-09T01:14:37.824Z. Cite as: A & S Nathan Heating & Cooling LLC — Tavlee (https://tavlee.com/contractor/a-and-s-nathan-heating-and-cooling-llc-ansonia) Source: https://tavlee.com/contractor/a-and-s-nathan-heating-and-cooling-llc-ansonia ## Sitemap [Full site index](https://tavlee.com/sitemap.md)