Best solar companies California Greiner Heating & Air Conditioning

Greiner Heating & Air Conditioning Reviews

Based in Dixon, CA. This profile is built from public installation records and published ratings, not paid placement.

311verified installs in California utility records*
5recent installs, 2025-26 records*
2009first year in county records
8.1/10Solar.com Score · 1,288 reviews analyzed

Solar.com Installer Score for Greiner Heating & Air Conditioning

One score, computed the same way for every installer. We read the full text of all 1,288 substantive published Greiner Heating & Air Conditioning review texts across every platform and measure what customers actually report. Not a survey. Not a sample. Never for sale.

Solar.com Installer Score

8.1/10

Blends the six category scores (70%) with the recency-weighted star record (30%).

Synthesized from 1,288 substantive customer review texts (1,740 published reviews collected).

Google 5.0★ · 1,612 reviewsYelp 3.9★ · 128 reviews

Updated September 28, 2026 · No installer can pay to change this score · How scores work →

Read what customers actually say ↓
Review star recordRecency-weighted star ratings across platforms, converted to a 0-10 signal before it is blended into the headline Solar.com Score.10.0

recency-weighted star ratings across platforms

Sales IntegrityHow clearly and honestly the company explains the system, contract, savings, and incentives before you sign.6.8

136 reviews speak to this · 100 praise · 35 complaints

Price TransparencyHow well the final price, financing terms, and incentive guidance match what customers were led to expect.5.3

61 reviews speak to this · 27 praise · 34 complaints

CommunicationHow reliably the company keeps customers informed and answers questions across sales, installation, and service.8.1

238 reviews speak to this · 220 praise · 18 complaints

Timeline ReliabilityHow well the company manages the path from contract through permits, installation, inspection, and turn-on — without the customer having to chase it.7.4

67 reviews speak to this · 58 praise · 9 complaints

WorkmanshipThe quality, professionalism, neatness, and property care of the physical installation.8.7

347 reviews speak to this · 333 praise · 14 complaints

Long-Term SupportHow well the system performs after turn-on, how the company handles monitoring, warranty claims, and service calls — and its staying power to honor them.7.5

120 reviews speak to this · 112 praise · 8 complaints

#263 of 678 scored in California by Solar.com Installer Score

How does Greiner Heating & Air Conditioning compare where you live? Rankings are local; an installer that leads one city can trail in the next. See how they rank in your city →

Why this differs from star ratings: most five-star reviews say “great company” and stop, and star averages reward that. These category scores only count reviews with concrete evidence, weighted by recency and the reviewer’s track record. A company can hold a strong star average while specific categories score lower; that gap is usually where the real story is. Categories with more complaints than praise are the questions worth asking any bidder, not necessarily dealbreakers.

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Where Greiner Heating & Air Conditioning builds

County-by-county activity from CPUC records through May 2026.

What this data covers: *Counts on this page, including the totals up top, come from investor-owned-utility interconnection records (SCE, SDG&E, PG&E). Work in municipal-utility territory, such as LADWP or city utilities, and outside California does not appear here, so this company's true totals are higher than shown. Unlike the county rankings, this profile also shows counties below the 250-install ranking floor.

CountyVerified installsRecent 2025-26Active sinceMedian system% leasedCounty rankingLink to the county ranking page. This company's rank on this page is its Solar.com Installer Score rank, shown above.
Solano County178220094.1 kW0.0%below ranking floor (under 250 installs)
Yolo County133320093.9 kW0.0%below ranking floor (under 250 installs)

% leased counts systems recorded as third party owned (lease or power purchase agreement); the remainder are customer owned. Median system size is the middle system this company installed in that county. Star ratings and review counts are from Google.

Greiner Heating & Air Conditioning reviews: what customers say

An independent synthesis of published customer feedback across Google and Yelp, updated September 23, 2026. Green marks praise, amber mixed experiences, red complaints.

Sales & proposal integrity

Sales Integrity6.8/10

Reviewers most often describe the sales process as low-pressure and informative, with staff taking time to explain options and answer questions. A smaller but meaningful set of complaints focuses on pushy sales behavior, concerns about how offers were presented, and occasional dissatisfaction with expectations around cost or discounts.Solar.com's composite of published customer feedback, not a customer quote

Low-pressure consultations. Many reviewers say the sales conversation felt calm, informative, and not rushed, with clear explanations of options and next steps. Representative review excerpt: "He never made us feel rushed or pressured, and he took the time to answer all of our questions and explain the details so we could feel confident in our..."

Helpful, question-friendly quoting. Some customers report that staff took time to walk through details and provide quotes without pressure to move forward immediately. Representative review excerpt: "He also noted some other issues with my ducting and took the time to give me a quote to resolve it with no pressure at all to move forward with..."

Pressure and offer concerns. A minority of reviewers describe the sales approach as pushy or say the way pricing and discounts were presented raised concerns. Representative review excerpt: "The salespersons are too high pressure and will bug the patients out of you."

Price & financing transparency

Price Transparency5.3/10

Feedback on pricing is mixed and trends less favorable than the company’s sales and communication ratings.Solar.com's composite of published customer feedback, not a customer quote

High-cost concerns. A notable share of complaints centers on prices that reviewers felt were too high or not well justified, including worries about upselling or added costs. Representative review excerpt: "They're too expensive and are taking advantage of the sweltering heat we sometimes encounter."

Fair or lower-than-expected pricing. Several reviewers say the pricing felt reasonable, and some note that the final price came in below an earlier estimate. Representative review excerpt: "Their prices were a lot lower than my first estimate."

Clear answers on costs. Some customers say staff responded directly to cost questions and made the pricing discussion feel straightforward enough to evaluate comfortably. Representative review excerpt: "I really appreciated their reaction to my questions, which seemed sincere, by not making me feel I was in the way but, that I was really interested in this process."

Communication & coordination

Communication8.1/10

Communication is one of the stronger themes in the review corpus. Reviewers frequently mention responsive scheduling, appointment reminders, arrival updates, and staff who keep customers informed during the work. Complaints exist, but they are relatively limited and tend to focus on missed follow-up, phone handling, or a lack of timely response.Solar.com's composite of published customer feedback, not a customer quote

Responsive scheduling and updates. Many reviewers praise fast callbacks, clear appointment reminders, and accurate arrival-time updates. Representative review excerpt: "They also maintain communication, providing reminders of appointments, as well as accurate updates of arrival times."

Professional, informative coordination. Customers often say staff and technicians were responsive and kept them informed throughout the process. Representative review excerpt: "Always 100% professional and responsive--we have had a very positive experience with Greiner for our HVAC and solar/electrical needs."

Follow-up gaps. A small number of reviews describe weak phone handling or needing extra effort to get answers after an appointment issue. Representative review excerpt: "They just pass it the work to a phone tree that doesn't even know what they are doing."

Timeline reliability

Timeline Reliability7.4/10

Most reviewers describe scheduling and job completion as timely, including punctual arrivals and quick turnaround on installs. At the same time, some complaints mention missed appointment windows, rescheduling, or installation issues that affected inspection or activation timing.Solar.com's composite of published customer feedback, not a customer quote

Timely arrivals and completion. Several reviewers say crews arrived on time and completed the work efficiently. Representative review excerpt: "Brett and Henrique arrived on time and worked efficiently to install a new mini-split system in my shop."

Permits and inspection handling. Some customers note that permits, testing, and other activation steps were arranged as part of the process. Representative review excerpt: "Everything worked correctly the first time and they arranged for all permits and state testing as part of the contract."

Appointment and inspection disruptions. A smaller set of reviews mention late arrivals, overbooking, or installation issues that created inspection-related delays. Representative review excerpt: "I would not recommend a business that can't even show up on time to there scheduled appointment."

Workmanship & site care

Workmanship8.7/10

This is a strong area overall, with many reviewers praising careful installation, professional crews, and clean work sites. The complaint pattern is limited but includes a few concerns about installation choices, equipment or connection issues, and occasional questions about the quality of specific service offerings.Solar.com's composite of published customer feedback, not a customer quote

Professional, careful installs. Reviewers frequently describe the crews as professional and detail-oriented during installation. Representative review excerpt: "Ernesto, Armando, and Marco also joined Eduardo and Marcus during the install and everyone was extremely professional."

Clean job sites and solid finish. Customers also mention clean wrap-up work and installations that looked good once completed. Representative review excerpt: "The system they installed was excellent, the ceiling intake work looks amazing, and they made sure everything was clean in the end."

Isolated workmanship concerns. A smaller number of reviews point to installation-related issues or service visits that did not meet expectations. Representative review excerpt: "Full transparency, there were some issues that we experienced with the install of the system which lead to issues with passing our city inspection."

Long-term support & performance

Long-Term Support7.5/10

Post-install feedback is mixed and leans more cautious than the company’s workmanship and communication ratings. Many reviewers say systems perform well and that follow-up support is helpful, but the complaint pattern includes post-install service issues, equipment problems, and situations where customers wanted more effective follow-up.Solar.com's composite of published customer feedback, not a customer quote

Systems working well after install. Some reviewers say their systems run smoothly and meet comfort expectations after the project is complete. Representative review excerpt: "In short, we love our new heat pump, especially the fact that it blows so softly it's almost unnoticeable and it maintains the same temperature all day long using far..."

Helpful follow-up support. Several customers report that the company was responsive when questions or service needs came up after installation. Representative review excerpt: "He went into my attic checked out my system and thoroughly explained to me my options and what I needed to repair things, but also what I could potentially do..."

Post-install service issues. A smaller set of reviews mention equipment problems or unsatisfactory follow-up after the job was finished. Representative review excerpt: "Recently, we changed our Internet provider and called to get help in changing the system because when you change Internet provider, your in phase is not reporting the data when..."

Bottom line: GREINER HEATING & AIR CONDITIONING’s review profile is strongest in workmanship and communication, with many customers describing professional crews and responsive coordination. The softer spots are price transparency and long-term support, where reviewers more often raise concerns about cost clarity, post-install help, or service issues after the system is turned on.

How this is built: category scores and summaries weigh the company's full published rating record (1,622 Google reviews averaging 5.0 stars), the most recent and most relevant review texts, and recurring feedback themes verified acrossGoogle and Yelp. Ratings and review excerpts from published review sources. Refreshed as new feedback is published. No installer can pay to change it.

About Greiner Heating & Air Conditioning

Company background from published business information and licensing records.

Also files CPUC records as: Greiner Heating Air Solar Energy, Greiner Heating & Air.

Products

Solar

Service area

California. Note: the install counts on this page cover California investor-owned-utility records only.

Work for this company or see something out of date? Profiles can be claimed and corrected: contact partners@solar.com. Placement on solar.com is never for sale.

Recorded installs by year

Residential interconnections statewide in PG&E, SCE, and SDG&E records through May 2026.
2
2009
3
'10
4
'11
2
'12
4
'13
17
'14
24
'15
16
'16
4
'17
24
'18
27
'19
15
'20
29
'21
34
'22
89
'23
12
'24
5
'25

Important context: this chart shows investor-owned-utility records only. Companies that shift work toward municipal-utility territory (LADWP and city power departments) or other states will show declining bars here even while building steadily elsewhere, and 2025-26 records also lag real installation dates. Treat this as a partial window, not the company's full trajectory.

FAQ about Greiner Heating & Air Conditioning

What do customers say in Greiner Heating & Air Conditioning reviews?

We analyzed 1,288 substantive published customer reviews of Greiner Heating & Air Conditioning in full. The company's Solar.com Installer Score is 8.1/10, with category-level detail on this page covering sales integrity, price transparency, communication, timeline reliability, workmanship, and long-term support.

How many solar systems has Greiner Heating & Air Conditioning installed?

Greiner Heating & Air Conditioning appears as installer of record on 311+ residential systems in California investor-owned-utility interconnection records through May 2026. Work in municipal-utility territory or other states does not appear in those public records.

How can I compare Greiner Heating & Air Conditioning's pricing?

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How we built this data

Methodology: Counts are residential PV interconnections in investor-owned-utility territory (PG&E, SCE, SDG&E) per CPUC Rule 21 public records through May 2026. Postal and name variants are merged. Municipal utility territory such as LADWP, Glendale, Pasadena, Burbank, Anaheim, and Riverside Public Utilities is not included in those CPUC counts. Counts show recorded installations, not quality ratings. Reported costs are self-reported on owned-system interconnections. No installer can pay for placement.

Who we are: Solar.com is a solar marketplace — we connect homeowners with installers and earn a fee when projects move forward. These rankings and scores are computed from public installation records and published customer reviews. No installer can pay for placement, and no installer — including those we work with — can pay to change a score.