Sing

North Charleston, SC Furnace Repair · #1 of 6 · 50+ yrs

★ 5.0 · 725+ Google reviews · 📍 4421 Spruill Ave, North Charleston, SC 29405, USA
VOUCHEDSCORE✓EXCELLENT85/100ⓘ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 Repair services
Service area
North Charleston, SC + 1 nearby

Overview

Editorial review

Same-day emergency heating response is listed on Sing's site. Sing lists over 50 years serving the Lowcountry. The website highlights Heil heating products and run-tested units. Local winters and Charleston-area humidity create combustion and corrosion risks for furnaces. Reviews note technicians remembering past concerns and providing clear explanations.

Furnace repair and maintenance across the North Charleston and Charleston metro area, residential and commercial. Emergency service with same-day response is advertised. Heil heating products are featured, with units described as 100% run-tested on the site. Over 50 years serving the Lowcountry is stated.

Vouched Score breakdown — 85/100

Above the North Charleston, SC Furnace Repair average of 76/100. Ranks #1 of 6 listed Furnace Repair providers in North Charleston, SC.

Editorial Review 79 46%
Google Rating 100 17%
Local Search Rank 68 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

Across 6 vetted furnace repair providers in North Charleston, SC.

SignalSingNorth Charleston avgDelta
Vouched Score 85/100 76/100 +9 vs avg
Google rating 5.0★ 4.9★ +0.1 vs avg
Review volume 725+ 2,685+ -1960 vs avg
Years in business 50+ 26+ +24 vs avg

What customers say

Google
5.0 ★
725+ reviews
Where they stand on this page: Longest-established provider on this page (50+ years vs page median 20)
Reviewers praise: punctualityknowledgeable techniciansthorough diagnostics
Google · 725+ reviews

Pros

Verified strengths
  • High Google rating (5.0★ across 725+ reviews)
  • Long-established (50+ years in business)
What this provider advertises

Self-reported on their website — not independently verified.

  • Emergency response: same-day
  • Financing available
  • Maintenance plans available

When to choose them — and when to consider alternatives

Choose them if
  • You need furnace tune-up & maintenance
  • You need no-heat / emergency furnace repair
  • You need commercial furnace repair
  • You need same-day or after-hours service
  • You need to finance the work
Consider alternatives if
  • You want a BBB-rated firm specifically

Services

Service area

North Charleston, SC home · Repair North Charleston, SC home

Office: 4421 Spruill Ave, North Charleston, SC 29405, USA

Neighborhood: 4421 Spruill Ave, North Charleston, SC 29405, USA

Contact & hours

📍
4421 Spruill Ave, North Charleston, SC 29405, USA
🕒
Mon-Sat 8:00-4:30

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; Financing available; Maintenance plans available.
When should I choose Sing?
Choose them if: You need furnace tune-up & maintenance; You need no-heat / emergency furnace repair; You need commercial furnace repair; You need same-day or after-hours service; You need to finance the work.
When should I consider alternatives to Sing?
Consider alternatives if: You want a BBB-rated firm specifically.
What is the Vouched Score for Sing?
85/100. 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 repair service typically cost when working with a North Charleston, SC provider like Sing?
Furnace service call / diagnostic fee typically runs $65–$175, and hot surface igniter replacement runs $130–$390 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 Repair in North Charleston, SC?
Yes. Sing lists Furnace Repair among its services and serves North Charleston, SC and Repair 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 Repair 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 Repair North Charleston, SC.

Compare with nearby providers

Provider Vouched Google Years BBB Yelp Our picks
Sing (this company)
 85/100 5.0★ (725+) 50+ — — Highest Vouched Score
Commercial Furnace Repair
Charleston Heating and Air
 66/100 4.8★ (440+) 17+ — 2.9★ —
Preferred Home Services
 80/100 4.8★ (7,710+) — — 3.4★ —
LimRic Plumbing, Electrical, Heating & Air
 83/100 4.9★ (6,975+) 50+ — 3.4★ Best for Gas Valve & Combustion Repair

Listed in

Best Furnace in Repair North Charleston, SC

Explore more

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Profile last updated June 30, 2026.