AI Voicebot in Polish for an HVAC Company

Hello! I have extensive experience in creating voice AI assistants for business tasks. I will implement a solution for you that is indistinguishable from a live person in terms of speech quality.

What you will receive:

I use modern speech synthesis with minimal response delay.

I will configure RAG (knowledge base) so that the bot provides only verified information about your company.

Full support for barge-in — the assistant instantly responds to customer remarks.
…
The bot clearly guides the customer through the funnel and captures data for your CRM.

I am ready to show examples of my voice assistants' work in personal messages. Shall we discuss the details?

Best regards,
Dmytro

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I see that you need a voice bot with a natural Polish voice and minimal latency - this is exactly what I implemented in Real-Time Voice Translator. I will use OpenAI Whisper for Polish recognition, GPT/Claude with RAG for responses from your knowledge base, ElevenLabs for voice synthesis, and WebSocket for real-time interruptions without delays. On the website, I will implement a simple widget with an embed code - the user clicks the icon and speaks. What is the volume of knowledge in the database, and do you already have structured FAQs or documentation that need to be uploaded?

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Hello!
I have worked on similar voice AI solutions. The best option for Polish is ElevenLabs; they currently have one of the most natural voices and it works well with real-time.
I would create a simple widget for the website: button → user speaks → bot responds with voice. Under the hood: STT + LLM + your knowledge base + ElevenLabs for voice.
Regarding UX: I will make it so that the user can interrupt; the bot stops immediately and listens, without long pauses, as close to a live conversation as possible. This is resolved through streaming and proper audio processing.

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Hello, Artur

I have the best match solution for you.
Even have ready/semi-ready code.

PM for clarification

Hi,

I can build exactly the kind of AI voicebot you described: a practical website-based tool for an air conditioning company, not a flashy tech gadget.

The user will be able to click an icon on the website and start a voice conversation immediately, with natural Polish voice, low latency, and interruption support so the bot stops speaking and switches to listening right away.

I would build it as a simple and reliable LLM + RAG solution based on your prepared knowledge base, so the voicebot operates exclusively in Polish and does not invent information or provide final prices without having all the necessary details.

The voicebot can:
…
explain what information is needed to prepare a quote
inform users about waiting times during the busy season
answer simple questions about installation, servicing, and two-stage installation projects
provide predefined cost-related information
collect basic customer information
guide the customer to the next step, such as leaving contact details or booking a video consultation

For voice quality, I would use high-quality Polish speech technologies such as ElevenLabs or similar tools, with streaming STT/TTS and barge-in support to keep the conversation natural, fast, and non-robotic.

Estimated implementation cost for the initial website version: depends on the final scope, but I can propose the most practical Phase 1 version first and keep expansion to other channels as a separate phase later.

Portfolio:
https://m.youtube.com/playlist?list=PLsDvHM4R8gl25YL4YJNFlI1KVPHoxUle5

I’d be glad to build a solution that is simple for the user, useful for the company, and strong in real voice conversation quality.

Best regards,
Artur, Video Editor Expert

Hello,

I can build a simple, reliable AI voicebot for your website focused on lead qualification and customer FAQs in Polish. I would use an LLM with a RAG setup based on your knowledge base to ensure accurate, controlled responses.

For voice, I’d integrate high-quality Polish TTS (e.g., ElevenLabs) with low-latency streaming and full interruption support (barge-in), so conversations feel natural and responsive.

I have experience building voice-enabled AI assistants and can deliver a clean, production-ready solution.

Best regards,
… Jeo Vincent Carretas

Good day. I can create an AI voice bot in Polish for your website: with a knowledge base, natural voice, low latency, and the ability to interrupt during conversation. I envision the implementation through LLM + RAG + STT/TTS, initially as a web MVP. After agreeing on the scenarios and materials, I will be able to provide the exact cost and timeline.

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Your HVAC company needs a voicebot that handles Polish nuances while qualifying leads for air conditioning installs. The challenge is balancing high-quality ElevenLabs output with ultra-low latency for natural interruptions so the customer doesn't feel like they're talking to a machine. I'll use a RAG-based architecture with a vector database of your HVAC specs to ensure it strictly follows your pricing rules for wall chasing and installation length without inventing data.
I'll implement this using a WebRTC-based framework like Vapi combined with GPT-4o and the ElevenLabs Polish-V2 model. To give you an idea, something like:
const bot = new VoiceAI({
voiceId: 'eleven-pl-pro',
transcriber: 'deepgram-pl',
knowledgeBase: hvac_data,
allowInterruption: true
});
This setup ensures that as soon as a user asks about service terms, the bot responds instantly. I've built similar qualification tools where the priority was the human feel to keep leads engaged.
…
Looking forward to discussing your project in detail.

Good day. I reviewed the technical specifications, I will create an AI voice bot: FastAPI + STT + LLM + TTS (ElevenLabs), Polish, RAG, interruption, minimal delay.

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Good day! I am interested in your project.

I am a Junior Python developer, working with HTML, CSS, JavaScript, and Flask. I can create a website, a bot, or perform other tasks in Python.

I have already done:
- websites with interactivity (catalog, cart)
- programs with AI
- simple bots

… I am ready to discuss the details and offer solutions tailored to your needs 🙂

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Hello! I am ready to complete this project and have extensive experience developing various applications.

Hello! Your inquiry regarding the creation of a voice AI agent for the air conditioning industry is a task where understanding language is crucial, as well as minimal latency and the naturalness of Polish phonetics.

I have experience in creating interactive AI interfaces with voice output and lipsync support. An example of an AI model that converses in real-time can be seen here: https://217-154-170-186.nip.io/.

How I will build it and what technologies I will use:
To achieve the effect of a "live conversation" with interruption handling and low latency, I propose the following technology stack:

Voice Intelligence (orchestration): Vapi or Retell AI. These are specialized platforms for voice AI agents that provide latency below 800 ms and built-in interruption logic (as soon as the user starts speaking, the bot stops speaking).

… Brain (LLM): GPT-4o or Claude 3.5 Sonnet. They perform best with the Polish language and strict adherence to the knowledge base (RAG), which eliminates "hallucinations" regarding prices.

Voice (TTS): ElevenLabs (Turbo v2.5 models) — currently, this is the gold standard for naturally sounding Polish speech, with correct accents and intonation.

Knowledge Base: Your company's documentation (PDF/Text), integrated through Vector Store, so the bot knows the differences between installation stages and types of walls.

Frontend: A lightweight widget on your website (JS SDK), activated by clicking on an icon.

How we will achieve high quality:
Interruption handling: Using WebSockets for duplex communication. The bot constantly "listens" to the stream in the background and immediately interrupts speech generation upon detecting the user's voice (VAD — Voice Activity Detection).

Polish language: ElevenLabs offers extremely realistic Polish voices that do not sound like Google Translate.

Qualification logic: I will configure the scenario so that the bot smoothly guides the client through the checklist (route length, wall type, contact details), not providing the final price but preparing the ground for the manager.

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Good day, Artur!

I have experience in building voice AI bots based on LLM + RAG. I have implemented similar solutions with integration on the website — a widget with a button, WebSocket for real-time voice.

How it will work:

RAG based on the company's knowledge (prices, services, FAQ) — the bot responds only with facts, without fabrications
STT (Whisper/Deepgram) → LLM (GPT-4o) → TTS (ElevenLabs with a Polish voice) — natural sounding
Support for interruptions (barge-in), low latency between replies
… Collection of client data + direction to book a consultation
Embedded on the website as a JS widget
Stack: Python (FastAPI), OpenAI API, ElevenLabs/Deepgram, WebSocket, vector database for RAG

I am ready to show a demo of the approach at the first stage.

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Hello

Git-hub
https://github.com/ambarexpressmarket-lab/demo-repo

Portfolio
Google Drive

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Hello! I have reviewed your project and am ready to start working. I am confident that I can meet all your expectations.

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