Sing
North Charleston, SC Furnace Replacement · #1 of 7 · 50+ yrs
ⓘVouched Score is calculated from publicly available signals: Google rating & review count, Yelp rating, BBB grade, review sentiment, years in business, local search ranking, and provider website content. Not a guarantee of service quality.Embed this score
⏱ 50+ years in business
Review sentiment: 95/100
At a glance
- Google rating
- 5.0★ from 725+ reviews
- In business
- 50+ years
- Services
- 3 Furnace Replacement services
- Service area
- North Charleston, SC + 1 nearby
Overview
Editorial review
Sing lists furnace replacement and Heil system installations with named product lines.
Furnace replacement for North Charleston homeowners, with Heil gas furnaces and commercial options. High-efficiency equipment: lists inverter variable-speed compressors and 14–19 SEER product lines. Emergency response: advertises same-day service for heating emergencies. Financing options: notes available financing and over 50 years of local service.
Vouched Score breakdown — 84/100
Above the North Charleston, SC Furnace Replacement average of 75/100. Ranks #1 of 7 listed Furnace Replacement providers in North Charleston, SC.
Editorial Review
79
46%
Google Rating
100
17%
Local Search Rank
62
9%
Review Sentiment
95
15%
Years in Business
100
4%
Google Review Volume
77
9%
Composite of public-record signals (BBB, license records), customer review signals (Google, Yelp), and editorial assessment of provider profile. See full methodology →
How Sing compares to the North Charleston average
| Signal | Sing | North Charleston avg | Delta |
|---|---|---|---|
| Vouched Score | 84/100 | 75/100 | +9 vs avg |
| Google rating | 5.0★ | 4.9★ | +0.1 vs avg |
| Review volume | 725+ | 2,310+ | -1586 vs avg |
| Years in business | 50+ | 25+ | +25 vs avg |
What customers say
Where they stand on this page:
Longest-established provider on this page (50+ years vs page median 20)
Reviewers praise:
punctualityknowledgeable techniciansrepeat service history
Pros
Verified strengths
- High Google rating (5.0★ across 725+ reviews)
- Long-established (50+ years in business)
Self-reported on their website — not independently verified.
- Emergency response: same-day
- Satisfaction guarantee
- Financing available
When to choose them — and when to consider alternatives
Choose them if
- You need same-day furnace replacement
- You need same-day or after-hours service
- You need to finance the work
- You have a commercial property
- You want a top-rated provider with substantial review history (5.0★, 725+ reviews)
Consider alternatives if
- You want a BBB-rated firm specifically
Services
- Furnace Replacement
- Commercial HVAC
- Emergency HVAC Service
Service area
North Charleston, SC home · Replacement North Charleston, SC home
Contact & hours
Frequently asked questions
What are the pros of Sing?
Based on public records and customer reviews: High Google rating (5.0★ across 725+ reviews); Long-established (50+ years in business); Emergency response: same-day; Satisfaction guarantee; Financing available.
When should I choose Sing?
Choose them if: You need same-day furnace replacement; You need same-day or after-hours service; You need to finance the work; You have a commercial property; You want a top-rated provider with substantial review history (5.0★, 725+ reviews).
When should I consider alternatives to Sing?
Consider alternatives if: You want a BBB-rated firm specifically.
What is the Vouched Score for Sing?
84/100. Top contributing signals: Google Rating 100/100, Years In Business 100/100+ Review Sentiment 95/100. The score blends public-record signals (BBB, license records), customer review signals (Google, Yelp), and editorial assessment.
How long has Sing been in business?
Sing has been operating for 50+ years in North Charleston, SC.
What does furnace replacement service typically cost when working with a North Charleston, SC provider like Sing?
Full gas furnace replacement typically runs $2,600–$5,650, and high-efficiency condensing furnace runs $3,900–$8,250 in North Charleston, South Carolina. These are area-wide market estimates, not Sing's quotes. For an exact price, request a written estimate from Sing.
Does Sing do Furnace Replacement in North Charleston, SC?
Yes. Sing lists Furnace Replacement among its services and serves North Charleston, SC and Replacement North Charleston, SC.
Does Sing do Commercial HVAC in North Charleston, SC?
Yes. Sing lists Commercial HVAC among its services and serves North Charleston, SC and Replacement North Charleston, SC.
Does Sing do Emergency HVAC Service in North Charleston, SC?
Yes. Sing lists Emergency HVAC Service among its services and serves North Charleston, SC and Replacement North Charleston, SC.
Compare with nearby providers
| Provider | Vouched | Years | BBB | Yelp | Our picks | |
|---|---|---|---|---|---|---|
Sing (this company) |
84/100 | 5.0★ (725+) | 50+ | — | — | Highest Vouched Score High-Efficiency (95%+ AFUE) Upgrades Gas Furnace Replacement |
| 68/100 | 4.8★ (55+) | 18+ | — | — | Best NATE-Certified Installer | |
| 68/100 | 4.8★ (440+) | 17+ | — | 2.9★ | — | |
| 82/100 | 4.8★ (7,705+) | — | — | 3.4★ | — |
Listed in
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Profile last updated June 29, 2026.