What Casteel does

Casteel is a privately held, family-founded residential home services company headquartered in Marietta, Georgia, founded in 1987 by Jan and Bob Casteel. It provides HVAC (heating, ventilation, and air conditioning), plumbing, electrical, and indoor air quality services to homeowners across the greater Atlanta metropolitan area and surrounding Georgia communities. The company serves customers from two office locations — Marietta (West) and Lawrenceville (East) — and dispatches a fleet of 166+ fully stocked service vehicles to deliver same-day repairs, next-day installations, and 24/7 emergency response without overtime surcharges.

The company's core technology stack consists of standard residential HVAC, plumbing, and electrical diagnostic tools deployed from its mobile fleet, supplemented by accessory product lines including Lennox PureAir air purification, Phenomenal Aire Cold Plasma Generators, and Nest smart home integration (for which Casteel is the first Nest Pro Elite Installer in Atlanta). Underlying service operations are reinforced by mandatory 150 hours of annual technician training, background and drug screening, and a 10-year parts-and-labor warranty. The offering is bundled under the Comfort360 annual membership program, which adds subscription recurring revenue through 15% service discounts, waived diagnostic fees, priority scheduling, and extended warranty coverage.

Casteel's revenue model is predominantly transactional one-time services billed at upfront flat rates, complemented by the Comfort360 subscription stream and financing facilitation through GreenSky and GoodLeap (which generate transaction-based revenue on financed installations). The company distributes exclusively direct-to-consumer through its own fleet and online/phone booking channels, with no third-party resellers. Growth has been driven organically alongside a documented M&A and partnership pattern that absorbed Knight Air Conditioning (founded 1971), AccuTemp Heating & Cooling (founded 1989), and North Point Heating and Air Conditioning into the Casteel brand and operating platform.

Name

Casteel

Legal name

Casteel

Website

https://casteelair.com

Company type

Private

Founded year

1987

Operating status

Operating

Headcount range

251–500 employees

Short description

Casteel is a private, family-founded home services provider established in 1987, delivering HVAC, plumbing, electrical, and indoor air quality services to residential homeowners across the greater Atlanta, Georgia metro area through a 166-truck direct-to-consumer fleet.

Ownership category

akta.pro rank

Headquarters

HQ city

Marietta

HQ country

United States

HQ region

North America

Offices3 records

Markets served

GTM type

B2C

Offering type

Services

Cost components

Personnel, Operations, Marketing or Sales, Technology or R&D, Infrastructure

Revenue model

1. HVAC Services: Heating, ventilation, and air conditioning repair, maintenance, tune-up, and installation services. Revenue is generated on a per-job basis for repairs and as one-time fees for installations. Same-day repair services and next-day installation services drive transaction volume.
2. Plumbing Services: Full-service plumbing including repair, drain clearing, water heater installation, tankless water heater services, sewer and water line services, gas line repair, hydro jetting, water softeners, water filtration, and garbage disposal services. Billed per job on a flat-rate pricing model.
3. Electrical Services: Electrical repair, wiring, inspection, whole-home rewiring, panel replacement, circuit breaker services, whole-house generators, EV charger installation, surge protection, outlet repair, and lighting services. Billed per job at upfront flat rates.
4. Comfort360 Membership Program: Annual membership program offering 15% off all services, instant $500 HVAC install credit, waived diagnostic fees, members-only extended P&L warranty, priority scheduling, and 24/7 support. Generates recurring subscription revenue and drives customer retention.
5. Financing Services: Partnered with GreenSky and GoodLeap lenders to provide consumer financing options including 0% financing for 12 months on major repairs and system installations, and new systems starting at $101/month on 15-year terms at 9.99% APR. Casteel earns revenue through facilitated financing on customer purchases.

Pricing tiers

Go-to-market motion1 record

Distribution channels2 records

Marketing channels8 records

Core offering

Casteel is a full-service residential home services company providing HVAC (heating, ventilation, and air conditioning), plumbing, and electrical repair, maintenance, and installation services to homeowners in the Greater Atlanta, Georgia metro area. The company complements these core services with indoor air quality solutions, mini-split systems, whole-house generators, EV charger installation, and the Comfort360 annual membership program offering discounts, priority scheduling, and extended warranties.

Product overview

Casteel is a home services company offering a unified suite of plumbing, heating, cooling, and electrical services under one roof. The core offering consists of Air Conditioning Services, Heating Services, Plumbing Services, Electrical Services, and Indoor Air Quality Services. These are complemented by the Comfort360 Membership program (a subscription-based maintenance and warranty program) and Financing Options. Accessory products include HVAC accessories (thermostats, filters, UV bulbs, humidifiers, EZ Trap), smart home integration (Nest products), and air purification systems (Lennox PureAir and Phenomenal Aire CPG). The company also offers specialized services like mini-split ductless systems and whole-house generators.

Differentiator

Problem solved

Functional benefit

Brands

• Comfort360: Membership program offering comprehensive coverage for HVAC, plumbing, and electrical systems with proactive maintenance, exclusive discounts, and 24/7 support.

Products and services

• Air Conditioning Services Full-service air conditioning services including repair, tune-up, installation, and replacement for residential homes throughout the Atlanta metro area, with same-day repair and next-day installation availability.
• Heating Services Comprehensive heating services including tune-up, repair, replacement, furnace services, and heat pump installation and maintenance for residential homes.
• Plumbing Services Full-service plumbing including repair, drain clearing, water heater service, tankless water heaters, sewer and water line services, gas line repair, hydro jetting, water softeners, water filtration, and garbage disposal services for residential homes.
• Electrical Services Complete electrical services including repair, wiring, inspection, whole-home rewiring, panel replacement, circuit breaker service, whole-house generators, EV charger installation, surge protection, outlet repair, and lighting services for residential homes.
• Indoor Air Quality Services Indoor air quality assessment and solutions including air purification, UV lamps, humidifiers, dehumidifiers, and air filtration systems for residential homes.
• Comfort360 Membership Program Annual subscription membership program providing 15% off all services, $500 HVAC install credit, waived diagnostic fees, members-only extended parts and labor warranty, priority scheduling, pre-schedule reminders, and 24/7/365 support for residential customers.

Quantifiable outcome

• Over 30,000 five-star reviews and A+ ratings from customers
• +6 more outcomes

Named customers2 records

Segments1 record

Ideal customer profiles1 record

Technology focussed No

API detail

Has API

No

API docs

API detail

Core technology

AI maturity

App detail

Integration3 records

Feature5 records

Partnerships

Four partnerships are on record, tiered core.

• North Point Heating and Air ConditioningcoreStrategic or Co-development PartnerCasteel partnered with North Point Heating and Air Conditioning, which has over 40 years of experience offering HVAC services to Fulton and Forsyth Counties in Georgia. North Point provides honest, certified service engineers. The partnership expands Casteel's service coverage and capabilities in the north metro Atlanta area, adding weatherization services, certified technicians, financing options, special offers, and 24-hour emergency services.
• Knight Air Conditioning and Heating CompanycoreStrategic or Co-development PartnerKnight AC & Heating, founded in 1971 and serving northeast metropolitan Atlanta for over 45 years, merged with Casteel. Knight had built its reputation on professional service, high-quality installations, and customer satisfaction guarantees. As part of the Casteel family, Knight now offers expanded services including 24-hour availability, electrical, and plumbing in addition to its core AC and heating services. Knight co-owners Tim Loudermilk and Joel Aderhold transitioned with the partnership.
• AccuTemp Heating & CoolingcoreStrategic or Co-development PartnerAccuTemp Heating & Cooling, founded in 1989 by HVAC technician Jerry McAnally and serving Cobb County and surrounding areas since then, merged with Casteel. The partnership enables Casteel to expand service offerings to Atlanta area residents, adding AccuTemp's heating and air conditioning expertise to Casteel's full-service plumbing and electrical capabilities. Jerry McAnally, founder of AccuTemp, expressed alignment with Casteel's core value of 'Always Do the Right Thing.'
• LennoxcoreTechnology or IntegrationLennox is a key manufacturer partner for HVAC equipment. Casteel is a recipient of multiple Lennox awards including Overall Outstanding Performance, President's Council, and Ultimate Comfort Advisor. Casteel also partners with Lennox on the Feel The Love program, where Lennox gifts HVAC units at no cost to nominated community heroes. The Lennox PureAir air purification system is sold and installed by Casteel.

Scale indicators8 records

Recent moves6 records

Expansion highlights5 records

Direct peers

• Coolray Heating, Cooling, Plumbing & Electrical: Direct multi-trade residential HVAC, plumbing, and electrical services competitor in the Atlanta metro area. Very similar positioning to Casteel as a long-standing, full-service home mechanical/electrical contractor serving Greater Atlanta homeowners with same-day and 24/7 offerings.
• R.S. Andrews: Atlanta-based residential HVAC, plumbing, and electrical services company founded in 1968. Direct regional competitor with comparable multi-trade offering, premium-service positioning, and similar target customer base in the same metro.
• Goettl Air Conditioning & Plumbing: Multi-trade residential HVAC and plumbing services company operating across the Sun Belt with comparable business model combining HVAC, plumbing, and home services under one brand, plus strong emphasis on customer experience and technician quality.
• Mr. Plumber (Atlanta): Atlanta-area residential plumbing services company. Direct regional peer in the same metro offering overlapping residential plumbing, drain clearing, and water heater services to the same homeowner segment.

Broad incumbents

• One Hour Heating & Air Conditioning: National residential HVAC franchise brand owned by Neighborly, Inc. Competes with Casteel on HVAC service quality and customer experience but operates as a broader franchise network across the U.S. with corporate marketing and operational support.
• Roto-Rooter: National plumbing and drain cleaning services franchise. Overlaps with Casteel in plumbing and water heater services but operates nationally with much broader geographic reach and franchise distribution structure.
• Mr. Rooter Plumbing: National plumbing services franchise owned by Neighborly. Serves similar residential customers with comparable plumbing offerings, though not directly in Casteel's primary HVAC and electrical categories.
• ARS / Rescue Rooter: National residential HVAC, plumbing, and electrical services company. A larger multi-trade incumbent with broader geographic coverage and corporate backing versus Casteel's regional founder-owned model.

Emerging players

• HomeX: Tech-enabled home services platform focused on improving residential service experiences. Emerging competitor that could disrupt traditional contractors like Casteel through digital scheduling, pricing transparency, and standardized service delivery.

Others

• ServiceTitan: Software platform for residential and commercial trades. Not a direct competitor but an enabling vendor that supports operations like Casteel's, powering dispatch, CRM, and field operations across the home services industry.

Market position

Strengths5 records

Weaknesses5 records

Competitive moat5 records

Key risks5 records

Key highlights7 records

Customer concentration

• Xx.com/CasteelAir
• Facebookfacebook.com/casteelair
• LinkedInlinkedin.com/company/casteelair

Compliance8 records

Revenue estimate

Valuation estimate

Number of profiles

Profiles3 records

Subsidiaries3 records

Funding overview

Funding rounds

Investors

Funding detail is available on the Subscription and Enterprise plan.Contact sales →

M&A

Investments

M&A and investment is available on the Subscription and Enterprise plan.Contact sales →

Frequently asked questions about Casteel