Who an AI assistant picked for HVAC in Lake Zurich, IL

Who came up in Lake Zurich

Every company the assistant named across the six questions, ordered by how often it was picked first. Tested on 2026-09-30.

Company	Picked first	Picked
Aaron & Trecker Heating & Air Conditioningaaronandtrecker.com	6 of 6	6 of 6
Markgraf's Heating & Air Conditioningmarkgrafshvac.com	0 of 6	6 of 6
Martin Enterprises Heating & Air Conditioningmartinenterprisesheatingandac.com	0 of 6	6 of 6

Question 1 of 6

First
Aaron & Trecker Heating & Air Conditioning
“Its Lake Zurich furnace repair page lists same-day arrival availability, a $104 diagnostic, and online scheduling.”
#2
Markgraf's Heating & Air Conditioning
“It advertises 24-hour emergency service and furnace repair for any make or model.”
#3
Martin Enterprises Heating & Air Conditioning
“It advertises 24/7 emergency HVAC service and same-day appointments in Lake Zurich.”

Passed
Mr. Heating and Cooling Inc.
“It advertises same-day and 24/7 service, but its site presents a broader service area and offers less Lake Zurich-specific repair detail than the picks.”
Passed
SAVA HVAC & Appliance Repair
“It advertises same-day service in Lake Zurich, but its HVAC work is combined with appliance repair and its stated hours are Monday through Saturday, 8 a.m. to 6 p.m.”

Question 2 of 6

First
Aaron & Trecker Heating & Air Conditioning
“Its homepage says it is locally owned and operated, has 42+ years in business, and offers 24/7 live answering and financing.”
#2
Markgraf's Heating & Air Conditioning
“It says it has served the area since 1967 and advertises emergency service, full-service HVAC, and free estimates.”
#3
Martin Enterprises Heating & Air Conditioning
“It describes itself as family-owned and offers repair, maintenance, installation, and emergency heating and cooling service.”

Passed
Mr. Heating and Cooling Inc.
“Its site advertises broad HVAC service and same-day availability, but provides less visible detail about local history and ownership.”
Passed
SAVA HVAC & Appliance Repair
“It lists same-day HVAC service and a $79 diagnostic, though the business combines HVAC with appliance repair and lists set operating hours.”

Question 3 of 6

First
Aaron & Trecker Heating & Air Conditioning
“It offers furnace installation and heat pump services, and its FAQ gives a $4,000–$8,500 furnace installation range with cost factors described.”
#2
Markgraf's Heating & Air Conditioning
“It offers heating installation and replacement, free estimates, financing options, and says it keeps brand-name equipment in stock.”
#3
Martin Enterprises Heating & Air Conditioning
“It offers furnace and heat pump installation, free estimates, and financing options for approved credit.”

Passed
Mr. Heating and Cooling Inc.
“It offers furnace installation and financing, but the pages I checked did not show a rough installation price or detailed quote information.”
Passed
SAVA HVAC & Appliance Repair
“Its Lake Zurich page details repair and a diagnostic fee, but did not provide clear furnace or heat pump installation options in the pages reviewed.”

Question 4 of 6

First
Aaron & Trecker Heating & Air Conditioning
“Its Lake Zurich service page lists same-day arrival availability and online scheduling for HVAC repair.”
#2
Markgraf's Heating & Air Conditioning
“It advertises 24/7 emergency service and AC repair with free estimates.”
#3
Martin Enterprises Heating & Air Conditioning
“It advertises 24/7 emergency service and same-day appointments for heating and cooling problems.”

Passed
SAVA HVAC & Appliance Repair
“It advertises same-day HVAC service in Lake Zurich but lists Monday-to-Saturday operating hours rather than around-the-clock emergency availability.”
Passed
Always Air Inc.
“It serves Lake Zurich and advertises emergency service, but the service-area page did not specify same-day appointments.”

Question 5 of 6

First
Aaron & Trecker Heating & Air Conditioning
“Its furnace repair page provides online scheduling, and its furnace maintenance page covers annual seasonal service.”
#2
Martin Enterprises Heating & Air Conditioning
“Its site offers a Book Now link and lists heating maintenance and tune-ups among its services.”
#3
Markgraf's Heating & Air Conditioning
“It offers preventative heating maintenance but directs customers to call to schedule.”

Passed
SAVA HVAC & Appliance Repair
“Its page promotes online booking, but its listed service hours are Monday through Saturday and its detailed appointment information focuses more on repair than seasonal furnace maintenance.”
Passed
Mr. Heating and Cooling Inc.
“The site asks homeowners to call to schedule, and I did not find an online booking calendar in the pages reviewed.”

Question 6 of 6

First
Aaron & Trecker Heating & Air Conditioning
“It publishes a $104 furnace diagnostic price and describes what the visit includes.”
#2
Markgraf's Heating & Air Conditioning
“It offers free estimates and says customers can understand the cost before work starts.”
#3
Martin Enterprises Heating & Air Conditioning
“It offers free estimates for installations, though the pages reviewed did not show a fixed service-call price.”

Passed
SAVA HVAC & Appliance Repair
“It publishes a $79 diagnostic fee in its Lake Zurich service area page, but Aaron & Trecker’s page more directly specifies a furnace repair diagnostic and what it includes.”
Passed
Mr. Heating and Cooling Inc.
“It advertises competitive pricing and financing but does not publish a diagnostic fee or fixed service price in the pages reviewed.”

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