Voice AI

for Solar & HVAC

Powering Every Step of Your renewable Journey

Reach more leads, qualify suitable home owners, and schedule on-site appointments with telli’s voice agents for solar and HVAC businesses.

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Automating call operations for

Benefits

Turn every inquiry into a conversation with telli.

Higher Conversion

telli’s smart calling boosts reach rates and drives higher conversions across your HVAC & Solar sales funnel.

Speed-to-Lead

Instant lead-to-call on form submit, triggered in seconds to maximize reachability.

Lower Cost

Cut costs by up to 60%. telli’s AI agents handle outreach and homeowner qualification at a fraction of traditional team expenses.

Seamless Data Sync

telli automatically syncs extracted call data to your CRM or system of record, powering instant follow-ups and tailored offers.
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Features

Comprehensive AI Voice Solutions for Solar & HVAC

Call Transfer 
Seamlessly hand off inbound leads with warm transfers. Telli connects every AI-led conversation to the right human rep, checking availability and providing a brief summary of the previous conversation.
Appointment Booking 
Let your AI handle scheduling from start to finish. telli’s voice agents connect directly to your CRMs and calendars, so appointments are booked instantly. No more back-and-forth emails or missed opportunities.
Auto Dialer
Run outbound call campaigns at scale with telli’s AI voice agents. Upload a lead list, customize each call, and let the system handle the outreach automatically.
Custom Workflows
Customize call workflows to match your sales process. Instantly call new leads, schedule appointments, and automatically trigger callbacks. 
Call Analytics
Understand what’s happening on every call by tracking outcomes, monitoring performance, and optimizing your strategy.
See What You’ll Save With telli.
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Multilingual AI Agents

Sound Local. Everywhere.

Deliver fluent, native-sounding conversations in English, German, French, Spanish, Dutch and Italian. Build trust with customers using local accents and natural tone. No translators, no extra staff.

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Deployment

Up and Running in Days, Not Weeks.

Integrate in seconds, deploy in days. We’re there at every step to ensure your voice agents perform flawlessly from day one.
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Customers

You're in Great Company

5M+ calls automated

Drive higher inbound throughput with AI-optimized call handling

10
%
x
increase in monthly call volume

Convert more conversations into appointments with AI-guided scheduling

150
%
x
increase in booking rate

Offload routine intake calls to AI for cleaner, faster front-line operations

90
%
x
of information-gathering calls handled by a telli agent

Multiply call throughput using AI agents that operate without bottlenecks

4
%
x
completed call volume

Fill more technician calendars with AI-driven appointment scheduling

30
%
x
increase in weekly service appointments scheduled

Reach more customers on the first attempt with intelligent call sequencing

45
%
x
increase in connection rate

Convert more consultations into revenue with AI-guided follow-up and qualification

15
%
x
increase in CVR from consultation to sale

telli’s AI agents have expanded our outbound capacity further than we thought possible. We’re saving time, reaching more leads, and seeing a huge spike in follow-ups from potential customers.

Mareike Wiethölter
Head of Process Management

As a fast-growing AI-based company, we only work with the most cutting-edge solutions, and telli is just that. They help us dramatically scale lead response while giving our customers a high-quality experience.

Justus Kloth
Associate Director of Strategy

telli is leading the charge for call automation in Germany. They tailored their voice agents to our exact business needs, and the efficiency gains have been incredible.

Martin Fricke
Product Manager

telli is the most scalable and cost-efficient answer to call automation on the market. If you’re looking to ramp up sales without compromising on customer satisfaction, it’s a must.

Christoph Pirkl
CSO

We’ve been using telli for three months to book appointments with leads, and the results have been great. It’s surprisingly easy to use, and the AI agent consistently books appointments at the same rate or better than our internal call center.

Tommaso Piatti
Director Operations

telli delivers an incredibly human-like, scalable, and professional experience that's transformed how we handle customer calls. We're thrilled with both the product and the responsive, supportive team behind it.

Matthias Knoche
COO

telli brought our sales floor from chaos to calm. Our team now focuses on actually helping customers, not just reaching and scheduling them — and we haven’t missed a lead since.

Richard Ruben
Co-founder and CEO

Re-engage dormant leads at scale through intelligent outbound follow-ups

20
%
x
reactivation rate for outbound calls among reached leads

Eliminate long waits with near-instant AI call responses

99
%
x
faster call response time

Accelerate hiring steps with automated candidate progression

75
%
x
reduction in time spent advancing candidates

Resolve customer needs end-to-end through autonomous AI call handling

50
%
x
of calls fully resolved by telli agent

Streamline dispatch workflows with automated coordination and routing

40
%
x
time saved across the entire service dispatch organization

Expand service capacity without adding headcount through AI-powered operations

90
%
x
reduction in scaling costs

Lift overall performance by automating the highest-leverage steps in the workflow

72
%
x
increase in success rate
Read success stories

Integrations

Plug and Play. No Heavy Lifting.

telli plugs directly into your CRM, calendars and customer systems, automatically capturing and updating data from every call. No manual entry. No extra steps.

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Product

Why telli?

Feature / Capability
telli
Human Agents
VOIP
Other AI Providers
Instant Calls
Manual
Manual
Some Providers
Smart Dailing
Manual
-
Some Providers
SIP Trunking & Phone Number Management
N/A
-
Some Providers
Multi-Transfer
N/A
-
Some Providers
Intelligent Lead Handoff
N/A
-
Some Providers
Dynamic Number Rotation
N/A
-
Some Providers
Call Analytics
Manual
-
Some Providers
Branded Caller ID
N/A
-
Some Providers
Inbound Callback
Manual
-
Some Providers
Context-Aware Callbacks (“Call Me Later”)
-
Some Providers
Custom Call Outcomes 
Manual
-
Some Providers
Appointment Booking, Rescheduling & Cancellation
-
Basic
Multilingual AI Agents 
Sometimes
-
Some Providers
24/7 Support 
-
-
Seamless CRM & Workflow Integration
Manual
-
Some Providers
Enterprise-Grade Security & GDPR
-
Some Providers
Cost-Effective at Scale
-
Expensive

Simpify Call Operations

See What You’ll Save With telli.

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Security

Enterprise-Grade Protection by Default.

How can HVAC and Solar companies use telli's voice AI agents?
HVAC and Solar companies can deploy telli’s voice AI agents to manage high volumes of calls effortlessly. From answering inquiries and scheduling service appointments to qualifying solar leads and energy upsells, telli ensures 24/7 responsiveness, boosts customer satisfaction, and enables teams to focus on high-value tasks instead of routine calls.
How can AI phone agents help HVAC & solar companies with customer support?
telli’s AI voice agents handle inbound calls 24/7, instantly assessing homeowner needs, routing issues to technicians, booking appointments, and logging every call in your CRM. HVAC and solar teams use telli to boost responsiveness and deliver seamless, always-on support.
How do AI-powered phone agents increase lead conversion for home service businesses?
telli converts more leads by calling new inquiries within seconds, qualifying homeowners, and booking on-site appointments automatically. It re-engages cold leads, upsells energy upgrades, and syncs every interaction to your CRM. HVAC and solar teams close more deals, faster, while reducing operational costs by up to 60%.

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